90381980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{11987}}^1$

素因数の和:12038

約数の個数: 48

約数和(自身を含む): 211468320

約数和(自身を除く): 121086340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 3770, 7540, 11987, 23974, 47948, 59935, 119870, 155831, 239740, 311662, 347623, 623324, 695246, 779155, 1390492, 1558310, 1738115, 3116620, 3476230, 4519099, 6952460, 9038198, 18076396, 22595495, 45190990, 90381980]

約数ペア:

[(1, 90381980), (2, 45190990), (4, 22595495), (5, 18076396), (10, 9038198), (13, 6952460), (20, 4519099), (26, 3476230), (29, 3116620), (52, 1738115), (58, 1558310), (65, 1390492), (116, 779155), (130, 695246), (145, 623324), (260, 347623), (290, 311662), (377, 239740), (580, 155831), (754, 119870), (1508, 59935), (1885, 47948), (3770, 23974), (7540, 11987)]