261997120

素因数分解:

$2^6\times 5^1\times 7^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1$

素因数の和:87

約数の個数: 280

約数和(自身を含む): 819595008

約数和(自身を除く): 557597888

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 31, 32, 35, 40, 44, 49, 55, 56, 62, 64, 70, 77, 80, 88, 98, 110, 112, 124, 140, 154, 155, 160, 176, 196, 217, 220, 224, 245, 248, 280, 308, 310, 320, 341, 343, 352, 385, 392, 434, 440, 448, 490, 496, 539, 560, 616, 620, 682, 686, 704, 770, 784, 868, 880, 980, 992, 1078, 1085, 1120, 1232, 1240, 1364, 1372, 1519, 1540, 1568, 1705, 1715, 1736, 1760, 1960, 1984, 2156, 2170, 2240, 2387, 2401, 2464, 2480, 2695, 2728, 2744, 3038, 3080, 3136, 3410, 3430, 3472, 3520, 3773, 3920, 4312, 4340, 4774, 4802, 4928, 4960, 5390, 5456, 5488, 6076, 6160, 6820, 6860, 6944, 7546, 7595, 7840, 8624, 8680, 9548, 9604, 9920, 10633, 10780, 10912, 10976, 11935, 12005, 12152, 12320, 13640, 13720, 13888, 15092, 15190, 15680, 16709, 17248, 17360, 18865, 19096, 19208, 21266, 21560, 21824, 21952, 23870, 24010, 24304, 24640, 26411, 27280, 27440, 30184, 30380, 33418, 34496, 34720, 37730, 38192, 38416, 42532, 43120, 47740, 48020, 48608, 52822, 53165, 54560, 54880, 60368, 60760, 66836, 69440, 74431, 75460, 76384, 76832, 83545, 85064, 86240, 95480, 96040, 97216, 105644, 106330, 109120, 109760, 116963, 120736, 121520, 132055, 133672, 148862, 150920, 152768, 153664, 167090, 170128, 172480, 190960, 192080, 211288, 212660, 233926, 241472, 243040, 264110, 267344, 297724, 301840, 334180, 340256, 372155, 381920, 384160, 422576, 425320, 467852, 486080, 528220, 534688, 584815, 595448, 603680, 668360, 680512, 744310, 763840, 768320, 818741, 845152, 850640, 935704, 1056440, 1069376, 1169630, 1190896, 1207360, 1336720, 1488620, 1637482, 1690304, 1701280, 1871408, 2112880, 2339260, 2381792, 2673440, 2977240, 3274964, 3402560, 3742816, 4093705, 4225760, 4678520, 4763584, 5346880, 5954480, 6549928, 7485632, 8187410, 8451520, 9357040, 11908960, 13099856, 16374820, 18714080, 23817920, 26199712, 32749640, 37428160, 52399424, 65499280, 130998560, 261997120]

約数ペア:

[(1, 261997120), (2, 130998560), (4, 65499280), (5, 52399424), (7, 37428160), (8, 32749640), (10, 26199712), (11, 23817920), (14, 18714080), (16, 16374820), (20, 13099856), (22, 11908960), (28, 9357040), (31, 8451520), (32, 8187410), (35, 7485632), (40, 6549928), (44, 5954480), (49, 5346880), (55, 4763584), (56, 4678520), (62, 4225760), (64, 4093705), (70, 3742816), (77, 3402560), (80, 3274964), (88, 2977240), (98, 2673440), (110, 2381792), (112, 2339260), (124, 2112880), (140, 1871408), (154, 1701280), (155, 1690304), (160, 1637482), (176, 1488620), (196, 1336720), (217, 1207360), (220, 1190896), (224, 1169630), (245, 1069376), (248, 1056440), (280, 935704), (308, 850640), (310, 845152), (320, 818741), (341, 768320), (343, 763840), (352, 744310), (385, 680512), (392, 668360), (434, 603680), (440, 595448), (448, 584815), (490, 534688), (496, 528220), (539, 486080), (560, 467852), (616, 425320), (620, 422576), (682, 384160), (686, 381920), (704, 372155), (770, 340256), (784, 334180), (868, 301840), (880, 297724), (980, 267344), (992, 264110), (1078, 243040), (1085, 241472), (1120, 233926), (1232, 212660), (1240, 211288), (1364, 192080), (1372, 190960), (1519, 172480), (1540, 170128), (1568, 167090), (1705, 153664), (1715, 152768), (1736, 150920), (1760, 148862), (1960, 133672), (1984, 132055), (2156, 121520), (2170, 120736), (2240, 116963), (2387, 109760), (2401, 109120), (2464, 106330), (2480, 105644), (2695, 97216), (2728, 96040), (2744, 95480), (3038, 86240), (3080, 85064), (3136, 83545), (3410, 76832), (3430, 76384), (3472, 75460), (3520, 74431), (3773, 69440), (3920, 66836), (4312, 60760), (4340, 60368), (4774, 54880), (4802, 54560), (4928, 53165), (4960, 52822), (5390, 48608), (5456, 48020), (5488, 47740), (6076, 43120), (6160, 42532), (6820, 38416), (6860, 38192), (6944, 37730), (7546, 34720), (7595, 34496), (7840, 33418), (8624, 30380), (8680, 30184), (9548, 27440), (9604, 27280), (9920, 26411), (10633, 24640), (10780, 24304), (10912, 24010), (10976, 23870), (11935, 21952), (12005, 21824), (12152, 21560), (12320, 21266), (13640, 19208), (13720, 19096), (13888, 18865), (15092, 17360), (15190, 17248), (15680, 16709)]