8437640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2971}}^1$

素因数の和:3053

約数の個数: 32

約数和(自身を含む): 19258560

約数和(自身を除く): 10820920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 2971, 5942, 11884, 14855, 23768, 29710, 59420, 118840, 210941, 421882, 843764, 1054705, 1687528, 2109410, 4218820, 8437640]

約数ペア:

[(1, 8437640), (2, 4218820), (4, 2109410), (5, 1687528), (8, 1054705), (10, 843764), (20, 421882), (40, 210941), (71, 118840), (142, 59420), (284, 29710), (355, 23768), (568, 14855), (710, 11884), (1420, 5942), (2840, 2971)]