18677540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1499}}^1$

素因数の和:1604

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 26682460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1499, 1780, 2492, 2998, 3115, 5996, 6230, 7495, 10493, 12460, 14990, 20986, 29980, 41972, 52465, 104930, 133411, 209860, 266822, 533644, 667055, 933877, 1334110, 1867754, 2668220, 3735508, 4669385, 9338770, 18677540]

約数ペア:

[(1, 18677540), (2, 9338770), (4, 4669385), (5, 3735508), (7, 2668220), (10, 1867754), (14, 1334110), (20, 933877), (28, 667055), (35, 533644), (70, 266822), (89, 209860), (140, 133411), (178, 104930), (356, 52465), (445, 41972), (623, 29980), (890, 20986), (1246, 14990), (1499, 12460), (1780, 10493), (2492, 7495), (2998, 6230), (3115, 5996)]