256456440

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1$

素因数の和:746

約数の個数: 192

約数和(自身を含む): 889574400

約数和(自身を除く): 633117960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 47, 60, 69, 72, 90, 92, 94, 115, 120, 138, 141, 180, 184, 188, 207, 230, 235, 276, 282, 345, 360, 376, 414, 423, 460, 470, 552, 564, 659, 690, 705, 828, 846, 920, 940, 1035, 1081, 1128, 1318, 1380, 1410, 1656, 1692, 1880, 1977, 2070, 2115, 2162, 2636, 2760, 2820, 3243, 3295, 3384, 3954, 4140, 4230, 4324, 5272, 5405, 5640, 5931, 6486, 6590, 7908, 8280, 8460, 8648, 9729, 9885, 10810, 11862, 12972, 13180, 15157, 15816, 16215, 16920, 19458, 19770, 21620, 23724, 25944, 26360, 29655, 30314, 30973, 32430, 38916, 39540, 43240, 45471, 47448, 48645, 59310, 60628, 61946, 64860, 75785, 77832, 79080, 90942, 92919, 97290, 118620, 121256, 123892, 129720, 136413, 151570, 154865, 181884, 185838, 194580, 227355, 237240, 247784, 272826, 278757, 303140, 309730, 363768, 371676, 389160, 454710, 464595, 545652, 557514, 606280, 619460, 682065, 712379, 743352, 909420, 929190, 1091304, 1115028, 1238920, 1364130, 1393785, 1424758, 1818840, 1858380, 2137137, 2230056, 2728260, 2787570, 2849516, 3561895, 3716760, 4274274, 5456520, 5575140, 5699032, 6411411, 7123790, 8548548, 10685685, 11150280, 12822822, 14247580, 17097096, 21371370, 25645644, 28495160, 32057055, 42742740, 51291288, 64114110, 85485480, 128228220, 256456440]

約数ペア:

[(1, 256456440), (2, 128228220), (3, 85485480), (4, 64114110), (5, 51291288), (6, 42742740), (8, 32057055), (9, 28495160), (10, 25645644), (12, 21371370), (15, 17097096), (18, 14247580), (20, 12822822), (23, 11150280), (24, 10685685), (30, 8548548), (36, 7123790), (40, 6411411), (45, 5699032), (46, 5575140), (47, 5456520), (60, 4274274), (69, 3716760), (72, 3561895), (90, 2849516), (92, 2787570), (94, 2728260), (115, 2230056), (120, 2137137), (138, 1858380), (141, 1818840), (180, 1424758), (184, 1393785), (188, 1364130), (207, 1238920), (230, 1115028), (235, 1091304), (276, 929190), (282, 909420), (345, 743352), (360, 712379), (376, 682065), (414, 619460), (423, 606280), (460, 557514), (470, 545652), (552, 464595), (564, 454710), (659, 389160), (690, 371676), (705, 363768), (828, 309730), (846, 303140), (920, 278757), (940, 272826), (1035, 247784), (1081, 237240), (1128, 227355), (1318, 194580), (1380, 185838), (1410, 181884), (1656, 154865), (1692, 151570), (1880, 136413), (1977, 129720), (2070, 123892), (2115, 121256), (2162, 118620), (2636, 97290), (2760, 92919), (2820, 90942), (3243, 79080), (3295, 77832), (3384, 75785), (3954, 64860), (4140, 61946), (4230, 60628), (4324, 59310), (5272, 48645), (5405, 47448), (5640, 45471), (5931, 43240), (6486, 39540), (6590, 38916), (7908, 32430), (8280, 30973), (8460, 30314), (8648, 29655), (9729, 26360), (9885, 25944), (10810, 23724), (11862, 21620), (12972, 19770), (13180, 19458), (15157, 16920), (15816, 16215)]