20447500

素因数分解:

$2^2\times 5^4\times {\mathrm{8179}}^1$

素因数の和:8203

約数の個数: 30

約数和(自身を含む): 44720060

約数和(自身を除く): 24272560

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8179, 16358, 32716, 40895, 81790, 163580, 204475, 408950, 817900, 1022375, 2044750, 4089500, 5111875, 10223750, 20447500]

約数ペア:

[(1, 20447500), (2, 10223750), (4, 5111875), (5, 4089500), (10, 2044750), (20, 1022375), (25, 817900), (50, 408950), (100, 204475), (125, 163580), (250, 81790), (500, 40895), (625, 32716), (1250, 16358), (2500, 8179)]