290460680

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{74861}}^1$

素因数の和:74969

約数の個数: 32

約数和(自身を含む): 660282840

約数和(自身を除く): 369822160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 74861, 149722, 299444, 374305, 598888, 748610, 1497220, 2994440, 7261517, 14523034, 29046068, 36307585, 58092136, 72615170, 145230340, 290460680]

約数ペア:

[(1, 290460680), (2, 145230340), (4, 72615170), (5, 58092136), (8, 36307585), (10, 29046068), (20, 14523034), (40, 7261517), (97, 2994440), (194, 1497220), (388, 748610), (485, 598888), (776, 374305), (970, 299444), (1940, 149722), (3880, 74861)]