18893720

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2473}}^1$

素因数の和:2675

約数の個数: 32

約数和(自身を含む): 42750720

約数和(自身を除く): 23857000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2473, 3820, 4946, 7640, 9892, 12365, 19784, 24730, 49460, 98920, 472343, 944686, 1889372, 2361715, 3778744, 4723430, 9446860, 18893720]

約数ペア:

[(1, 18893720), (2, 9446860), (4, 4723430), (5, 3778744), (8, 2361715), (10, 1889372), (20, 944686), (40, 472343), (191, 98920), (382, 49460), (764, 24730), (955, 19784), (1528, 12365), (1910, 9892), (2473, 7640), (3820, 4946)]