21963880

素因数分解:

$2^3\times 5^1\times {\mathrm{549097}}^1$

素因数の和:549108

約数の個数: 16

約数和(自身を含む): 49418820

約数和(自身を除く): 27454940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 549097, 1098194, 2196388, 2745485, 4392776, 5490970, 10981940, 21963880]

約数ペア:

[(1, 21963880), (2, 10981940), (4, 5490970), (5, 4392776), (8, 2745485), (10, 2196388), (20, 1098194), (40, 549097)]