20741750

素因数分解:

$2^1\times 5^3\times {\mathrm{163}}^1\times {\mathrm{509}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 39143520

約数和(自身を除く): 18401770

約数列:

[1, 2, 5, 10, 25, 50, 125, 163, 250, 326, 509, 815, 1018, 1630, 2545, 4075, 5090, 8150, 12725, 20375, 25450, 40750, 63625, 82967, 127250, 165934, 414835, 829670, 2074175, 4148350, 10370875, 20741750]

約数ペア:

[(1, 20741750), (2, 10370875), (5, 4148350), (10, 2074175), (25, 829670), (50, 414835), (125, 165934), (163, 127250), (250, 82967), (326, 63625), (509, 40750), (815, 25450), (1018, 20375), (1630, 12725), (2545, 8150), (4075, 5090)]