257047040

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:174

約数の個数: 160

約数和(自身を含む): 659957760

約数和(自身を除く): 402910720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 64, 79, 80, 82, 124, 128, 155, 158, 160, 164, 205, 248, 256, 310, 316, 320, 328, 395, 410, 496, 512, 620, 632, 640, 656, 790, 820, 992, 1240, 1264, 1271, 1280, 1312, 1580, 1640, 1984, 2449, 2480, 2528, 2542, 2560, 2624, 3160, 3239, 3280, 3968, 4898, 4960, 5056, 5084, 5248, 6320, 6355, 6478, 6560, 7936, 9796, 9920, 10112, 10168, 10496, 12245, 12640, 12710, 12956, 13120, 15872, 16195, 19592, 19840, 20224, 20336, 20992, 24490, 25280, 25420, 25912, 26240, 32390, 39184, 39680, 40448, 40672, 48980, 50560, 50840, 51824, 52480, 64780, 78368, 79360, 81344, 97960, 100409, 101120, 101680, 103648, 104960, 129560, 156736, 162688, 195920, 200818, 202240, 203360, 207296, 259120, 313472, 325376, 391840, 401636, 406720, 414592, 502045, 518240, 626944, 650752, 783680, 803272, 813440, 829184, 1004090, 1036480, 1253888, 1567360, 1606544, 1626880, 1658368, 2008180, 2072960, 3134720, 3213088, 3253760, 4016360, 4145920, 6269440, 6426176, 8032720, 8291840, 12852352, 16065440, 25704704, 32130880, 51409408, 64261760, 128523520, 257047040]

約数ペア:

[(1, 257047040), (2, 128523520), (4, 64261760), (5, 51409408), (8, 32130880), (10, 25704704), (16, 16065440), (20, 12852352), (31, 8291840), (32, 8032720), (40, 6426176), (41, 6269440), (62, 4145920), (64, 4016360), (79, 3253760), (80, 3213088), (82, 3134720), (124, 2072960), (128, 2008180), (155, 1658368), (158, 1626880), (160, 1606544), (164, 1567360), (205, 1253888), (248, 1036480), (256, 1004090), (310, 829184), (316, 813440), (320, 803272), (328, 783680), (395, 650752), (410, 626944), (496, 518240), (512, 502045), (620, 414592), (632, 406720), (640, 401636), (656, 391840), (790, 325376), (820, 313472), (992, 259120), (1240, 207296), (1264, 203360), (1271, 202240), (1280, 200818), (1312, 195920), (1580, 162688), (1640, 156736), (1984, 129560), (2449, 104960), (2480, 103648), (2528, 101680), (2542, 101120), (2560, 100409), (2624, 97960), (3160, 81344), (3239, 79360), (3280, 78368), (3968, 64780), (4898, 52480), (4960, 51824), (5056, 50840), (5084, 50560), (5248, 48980), (6320, 40672), (6355, 40448), (6478, 39680), (6560, 39184), (7936, 32390), (9796, 26240), (9920, 25912), (10112, 25420), (10168, 25280), (10496, 24490), (12245, 20992), (12640, 20336), (12710, 20224), (12956, 19840), (13120, 19592), (15872, 16195)]