256193920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:436

約数の個数: 128

約数和(自身を含む): 651168000

約数和(自身を除く): 394974080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 64, 74, 80, 124, 128, 148, 155, 160, 185, 248, 296, 310, 320, 349, 370, 496, 592, 620, 640, 698, 740, 992, 1147, 1184, 1240, 1396, 1480, 1745, 1984, 2294, 2368, 2480, 2792, 2960, 3490, 3968, 4588, 4736, 4960, 5584, 5735, 5920, 6980, 9176, 9920, 10819, 11168, 11470, 11840, 12913, 13960, 18352, 19840, 21638, 22336, 22940, 23680, 25826, 27920, 36704, 43276, 44672, 45880, 51652, 54095, 55840, 64565, 73408, 86552, 91760, 103304, 108190, 111680, 129130, 146816, 173104, 183520, 206608, 216380, 223360, 258260, 346208, 367040, 400303, 413216, 432760, 516520, 692416, 734080, 800606, 826432, 865520, 1033040, 1384832, 1601212, 1652864, 1731040, 2001515, 2066080, 3202424, 3462080, 4003030, 4132160, 6404848, 6924160, 8006060, 8264320, 12809696, 16012120, 25619392, 32024240, 51238784, 64048480, 128096960, 256193920]

約数ペア:

[(1, 256193920), (2, 128096960), (4, 64048480), (5, 51238784), (8, 32024240), (10, 25619392), (16, 16012120), (20, 12809696), (31, 8264320), (32, 8006060), (37, 6924160), (40, 6404848), (62, 4132160), (64, 4003030), (74, 3462080), (80, 3202424), (124, 2066080), (128, 2001515), (148, 1731040), (155, 1652864), (160, 1601212), (185, 1384832), (248, 1033040), (296, 865520), (310, 826432), (320, 800606), (349, 734080), (370, 692416), (496, 516520), (592, 432760), (620, 413216), (640, 400303), (698, 367040), (740, 346208), (992, 258260), (1147, 223360), (1184, 216380), (1240, 206608), (1396, 183520), (1480, 173104), (1745, 146816), (1984, 129130), (2294, 111680), (2368, 108190), (2480, 103304), (2792, 91760), (2960, 86552), (3490, 73408), (3968, 64565), (4588, 55840), (4736, 54095), (4960, 51652), (5584, 45880), (5735, 44672), (5920, 43276), (6980, 36704), (9176, 27920), (9920, 25826), (10819, 23680), (11168, 22940), (11470, 22336), (11840, 21638), (12913, 19840), (13960, 18352)]