21051400

素因数分解:

$2^3\times 5^2\times {\mathrm{67}}^1\times {\mathrm{1571}}^1$

素因数の和:1654

約数の個数: 48

約数和(自身を含む): 49706640

約数和(自身を除く): 28655240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 67, 100, 134, 200, 268, 335, 536, 670, 1340, 1571, 1675, 2680, 3142, 3350, 6284, 6700, 7855, 12568, 13400, 15710, 31420, 39275, 62840, 78550, 105257, 157100, 210514, 314200, 421028, 526285, 842056, 1052570, 2105140, 2631425, 4210280, 5262850, 10525700, 21051400]

約数ペア:

[(1, 21051400), (2, 10525700), (4, 5262850), (5, 4210280), (8, 2631425), (10, 2105140), (20, 1052570), (25, 842056), (40, 526285), (50, 421028), (67, 314200), (100, 210514), (134, 157100), (200, 105257), (268, 78550), (335, 62840), (536, 39275), (670, 31420), (1340, 15710), (1571, 13400), (1675, 12568), (2680, 7855), (3142, 6700), (3350, 6284)]