20775500

素因数分解:

$2^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{1123}}^1$

素因数の和:1179

約数の個数: 48

約数和(自身を含む): 46641504

約数和(自身を除く): 25866004

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 500, 740, 925, 1123, 1850, 2246, 3700, 4492, 4625, 5615, 9250, 11230, 18500, 22460, 28075, 41551, 56150, 83102, 112300, 140375, 166204, 207755, 280750, 415510, 561500, 831020, 1038775, 2077550, 4155100, 5193875, 10387750, 20775500]

約数ペア:

[(1, 20775500), (2, 10387750), (4, 5193875), (5, 4155100), (10, 2077550), (20, 1038775), (25, 831020), (37, 561500), (50, 415510), (74, 280750), (100, 207755), (125, 166204), (148, 140375), (185, 112300), (250, 83102), (370, 56150), (500, 41551), (740, 28075), (925, 22460), (1123, 18500), (1850, 11230), (2246, 9250), (3700, 5615), (4492, 4625)]