20874951

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 31084560

約数和(自身を除く): 10209609

約数列:

[1, 3, 9, 53, 107, 159, 321, 409, 477, 963, 1227, 3681, 5671, 17013, 21677, 43763, 51039, 65031, 131289, 195093, 393867, 2319439, 6958317, 20874951]

約数ペア:

[(1, 20874951), (3, 6958317), (9, 2319439), (53, 393867), (107, 195093), (159, 131289), (321, 65031), (409, 51039), (477, 43763), (963, 21677), (1227, 17013), (3681, 5671)]