256438120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{1063}}^1$

素因数の和:1274

約数の個数: 64

約数和(自身を含む): 596776320

約数和(自身を除く): 340338200

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 163, 185, 296, 326, 370, 652, 740, 815, 1063, 1304, 1480, 1630, 2126, 3260, 4252, 5315, 6031, 6520, 8504, 10630, 12062, 21260, 24124, 30155, 39331, 42520, 48248, 60310, 78662, 120620, 157324, 173269, 196655, 241240, 314648, 346538, 393310, 693076, 786620, 866345, 1386152, 1573240, 1732690, 3465380, 6410953, 6930760, 12821906, 25643812, 32054765, 51287624, 64109530, 128219060, 256438120]

約数ペア:

[(1, 256438120), (2, 128219060), (4, 64109530), (5, 51287624), (8, 32054765), (10, 25643812), (20, 12821906), (37, 6930760), (40, 6410953), (74, 3465380), (148, 1732690), (163, 1573240), (185, 1386152), (296, 866345), (326, 786620), (370, 693076), (652, 393310), (740, 346538), (815, 314648), (1063, 241240), (1304, 196655), (1480, 173269), (1630, 157324), (2126, 120620), (3260, 78662), (4252, 60310), (5315, 48248), (6031, 42520), (6520, 39331), (8504, 30155), (10630, 24124), (12062, 21260)]