251161533

素因数分解:

$3^3\times 7^1\times {\mathrm{1328897}}^1$

素因数の和:1328913

約数の個数: 16

約数和(自身を含む): 425247360

約数和(自身を除く): 174085827

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1328897, 3986691, 9302279, 11960073, 27906837, 35880219, 83720511, 251161533]

約数ペア:

[(1, 251161533), (3, 83720511), (7, 35880219), (9, 27906837), (21, 11960073), (27, 9302279), (63, 3986691), (189, 1328897)]