398613680

素因数分解:

$2^4\times 5^1\times {\mathrm{457}}^1\times {\mathrm{10903}}^1$

素因数の和:11373

約数の個数: 40

約数和(自身を含む): 928889952

約数和(自身を除く): 530276272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 457, 914, 1828, 2285, 3656, 4570, 7312, 9140, 10903, 18280, 21806, 36560, 43612, 54515, 87224, 109030, 174448, 218060, 436120, 872240, 4982671, 9965342, 19930684, 24913355, 39861368, 49826710, 79722736, 99653420, 199306840, 398613680]

約数ペア:

[(1, 398613680), (2, 199306840), (4, 99653420), (5, 79722736), (8, 49826710), (10, 39861368), (16, 24913355), (20, 19930684), (40, 9965342), (80, 4982671), (457, 872240), (914, 436120), (1828, 218060), (2285, 174448), (3656, 109030), (4570, 87224), (7312, 54515), (9140, 43612), (10903, 36560), (18280, 21806)]