18510220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10399}}^1$

素因数の和:10497

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 20801780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10399, 20798, 41596, 51995, 103990, 207980, 925511, 1851022, 3702044, 4627555, 9255110, 18510220]

約数ペア:

[(1, 18510220), (2, 9255110), (4, 4627555), (5, 3702044), (10, 1851022), (20, 925511), (89, 207980), (178, 103990), (356, 51995), (445, 41596), (890, 20798), (1780, 10399)]