255465980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{165887}}^1$

素因数の和:165914

約数の個数: 48

約数和(自身を含む): 668860416

約数和(自身を除く): 413394436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 165887, 331774, 663548, 829435, 1161209, 1658870, 1824757, 2322418, 3317740, 3649514, 4644836, 5806045, 7299028, 9123785, 11612090, 12773299, 18247570, 23224180, 25546598, 36495140, 51093196, 63866495, 127732990, 255465980]

約数ペア:

[(1, 255465980), (2, 127732990), (4, 63866495), (5, 51093196), (7, 36495140), (10, 25546598), (11, 23224180), (14, 18247570), (20, 12773299), (22, 11612090), (28, 9123785), (35, 7299028), (44, 5806045), (55, 4644836), (70, 3649514), (77, 3317740), (110, 2322418), (140, 1824757), (154, 1658870), (220, 1161209), (308, 829435), (385, 663548), (770, 331774), (1540, 165887)]