18420040

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2411}}^1$

素因数の和:2613

約数の個数: 32

約数和(自身を含む): 41679360

約数和(自身を除く): 23259320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2411, 3820, 4822, 7640, 9644, 12055, 19288, 24110, 48220, 96440, 460501, 921002, 1842004, 2302505, 3684008, 4605010, 9210020, 18420040]

約数ペア:

[(1, 18420040), (2, 9210020), (4, 4605010), (5, 3684008), (8, 2302505), (10, 1842004), (20, 921002), (40, 460501), (191, 96440), (382, 48220), (764, 24110), (955, 19288), (1528, 12055), (1910, 9644), (2411, 7640), (3820, 4822)]