90989980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{34729}}^1$

素因数の和:34869

約数の個数: 24

約数和(自身を含む): 192543120

約数和(自身を除く): 101553140

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 34729, 69458, 138916, 173645, 347290, 694580, 4549499, 9098998, 18197996, 22747495, 45494990, 90989980]

約数ペア:

[(1, 90989980), (2, 45494990), (4, 22747495), (5, 18197996), (10, 9098998), (20, 4549499), (131, 694580), (262, 347290), (524, 173645), (655, 138916), (1310, 69458), (2620, 34729)]