20849980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33629}}^1$

素因数の和:33669

約数の個数: 24

約数和(自身を含む): 45198720

約数和(自身を除く): 24348740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33629, 67258, 134516, 168145, 336290, 672580, 1042499, 2084998, 4169996, 5212495, 10424990, 20849980]

約数ペア:

[(1, 20849980), (2, 10424990), (4, 5212495), (5, 4169996), (10, 2084998), (20, 1042499), (31, 672580), (62, 336290), (124, 168145), (155, 134516), (310, 67258), (620, 33629)]