21905828

素因数分解:

$2^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{1951}}^1$

素因数の和:2363

約数の個数: 24

約数和(自身を含む): 43943424

約数和(自身を除く): 22037596

約数列:

[1, 2, 4, 7, 14, 28, 401, 802, 1604, 1951, 2807, 3902, 5614, 7804, 11228, 13657, 27314, 54628, 782351, 1564702, 3129404, 5476457, 10952914, 21905828]

約数ペア:

[(1, 21905828), (2, 10952914), (4, 5476457), (7, 3129404), (14, 1564702), (28, 782351), (401, 54628), (802, 27314), (1604, 13657), (1951, 11228), (2807, 7804), (3902, 5614)]