20459900

素因数分解:

$2^2\times 5^2\times {\mathrm{204599}}^1$

素因数の和:204613

約数の個数: 18

約数和(自身を含む): 44398200

約数和(自身を除く): 23938300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 204599, 409198, 818396, 1022995, 2045990, 4091980, 5114975, 10229950, 20459900]

約数ペア:

[(1, 20459900), (2, 10229950), (4, 5114975), (5, 4091980), (10, 2045990), (20, 1022995), (25, 818396), (50, 409198), (100, 204599)]