21493888

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12917}}^1$

素因数の和:12944

約数の個数: 32

約数和(自身を含む): 46117260

約数和(自身を除く): 24623372

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12917, 25834, 51668, 103336, 167921, 206672, 335842, 413344, 671684, 826688, 1343368, 1653376, 2686736, 5373472, 10746944, 21493888]

約数ペア:

[(1, 21493888), (2, 10746944), (4, 5373472), (8, 2686736), (13, 1653376), (16, 1343368), (26, 826688), (32, 671684), (52, 413344), (64, 335842), (104, 206672), (128, 167921), (208, 103336), (416, 51668), (832, 25834), (1664, 12917)]