20307500

素因数分解:

$2^2\times 5^4\times {\mathrm{8123}}^1$

素因数の和:8147

約数の個数: 30

約数和(自身を含む): 44413908

約数和(自身を除く): 24106408

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8123, 16246, 32492, 40615, 81230, 162460, 203075, 406150, 812300, 1015375, 2030750, 4061500, 5076875, 10153750, 20307500]

約数ペア:

[(1, 20307500), (2, 10153750), (4, 5076875), (5, 4061500), (10, 2030750), (20, 1015375), (25, 812300), (50, 406150), (100, 203075), (125, 162460), (250, 81230), (500, 40615), (625, 32492), (1250, 16246), (2500, 8123)]