18511720

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2423}}^1$

素因数の和:2625

約数の個数: 32

約数和(自身を含む): 41886720

約数和(自身を除く): 23375000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2423, 3820, 4846, 7640, 9692, 12115, 19384, 24230, 48460, 96920, 462793, 925586, 1851172, 2313965, 3702344, 4627930, 9255860, 18511720]

約数ペア:

[(1, 18511720), (2, 9255860), (4, 4627930), (5, 3702344), (8, 2313965), (10, 1851172), (20, 925586), (40, 462793), (191, 96920), (382, 48460), (764, 24230), (955, 19384), (1528, 12115), (1910, 9692), (2423, 7640), (3820, 4846)]