18549980

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1889}}^1$

素因数の和:2389

約数の個数: 24

約数和(自身を含む): 39054960

約数和(自身を除く): 20504980

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1889, 1964, 2455, 3778, 4910, 7556, 9445, 9820, 18890, 37780, 927499, 1854998, 3709996, 4637495, 9274990, 18549980]

約数ペア:

[(1, 18549980), (2, 9274990), (4, 4637495), (5, 3709996), (10, 1854998), (20, 927499), (491, 37780), (982, 18890), (1889, 9820), (1964, 9445), (2455, 7556), (3778, 4910)]