20538728

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{12647}}^1$

素因数の和:12689

約数の個数: 32

約数和(自身を含む): 45532800

約数和(自身を除く): 24994072

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 812, 1624, 12647, 25294, 50588, 88529, 101176, 177058, 354116, 366763, 708232, 733526, 1467052, 2567341, 2934104, 5134682, 10269364, 20538728]

約数ペア:

[(1, 20538728), (2, 10269364), (4, 5134682), (7, 2934104), (8, 2567341), (14, 1467052), (28, 733526), (29, 708232), (56, 366763), (58, 354116), (116, 177058), (203, 101176), (232, 88529), (406, 50588), (812, 25294), (1624, 12647)]