18957967

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1987}}^1$

素因数の和:2070

約数の個数: 16

約数和(自身を含む): 22901760

約数和(自身を除く): 3943793

約数列:

[1, 7, 29, 47, 203, 329, 1363, 1987, 9541, 13909, 57623, 93389, 403361, 653723, 2708281, 18957967]

約数ペア:

[(1, 18957967), (7, 2708281), (29, 653723), (47, 403361), (203, 93389), (329, 57623), (1363, 13909), (1987, 9541)]