21291242

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89459}}^1$

素因数の和:89485

約数の個数: 16

約数和(自身を含む): 38646720

約数和(自身を除く): 17355478

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 89459, 178918, 626213, 1252426, 1520803, 3041606, 10645621, 21291242]

約数ペア:

[(1, 21291242), (2, 10645621), (7, 3041606), (14, 1520803), (17, 1252426), (34, 626213), (119, 178918), (238, 89459)]