638564176

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{973421}}^1$

素因数の和:973470

約数の個数: 20

約数和(自身を含む): 1267395444

約数和(自身を除く): 628831268

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 973421, 1946842, 3893684, 7787368, 15574736, 39910261, 79820522, 159641044, 319282088, 638564176]

約数ペア:

[(1, 638564176), (2, 319282088), (4, 159641044), (8, 79820522), (16, 39910261), (41, 15574736), (82, 7787368), (164, 3893684), (328, 1946842), (656, 973421)]