20468890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8287}}^1$

素因数の和:8326

約数の個数: 32

約数和(自身を含む): 41771520

約数和(自身を除く): 21302630

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8287, 16574, 41435, 82870, 107731, 157453, 215462, 314906, 538655, 787265, 1077310, 1574530, 2046889, 4093778, 10234445, 20468890]

約数ペア:

[(1, 20468890), (2, 10234445), (5, 4093778), (10, 2046889), (13, 1574530), (19, 1077310), (26, 787265), (38, 538655), (65, 314906), (95, 215462), (130, 157453), (190, 107731), (247, 82870), (494, 41435), (1235, 16574), (2470, 8287)]