20766250

素因数分解:

$2^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:508

約数の個数: 40

約数和(自身を含む): 40065300

約数和(自身を除く): 19299050

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 125, 185, 250, 370, 449, 625, 898, 925, 1250, 1850, 2245, 4490, 4625, 9250, 11225, 16613, 22450, 23125, 33226, 46250, 56125, 83065, 112250, 166130, 280625, 415325, 561250, 830650, 2076625, 4153250, 10383125, 20766250]

約数ペア:

[(1, 20766250), (2, 10383125), (5, 4153250), (10, 2076625), (25, 830650), (37, 561250), (50, 415325), (74, 280625), (125, 166130), (185, 112250), (250, 83065), (370, 56125), (449, 46250), (625, 33226), (898, 23125), (925, 22450), (1250, 16613), (1850, 11225), (2245, 9250), (4490, 4625)]