21527500

素因数分解:

$2^2\times 5^4\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:212

約数の個数: 60

約数和(自身を含む): 48109600

約数和(自身を除く): 26582100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 109, 125, 158, 218, 250, 316, 395, 436, 500, 545, 625, 790, 1090, 1250, 1580, 1975, 2180, 2500, 2725, 3950, 5450, 7900, 8611, 9875, 10900, 13625, 17222, 19750, 27250, 34444, 39500, 43055, 49375, 54500, 68125, 86110, 98750, 136250, 172220, 197500, 215275, 272500, 430550, 861100, 1076375, 2152750, 4305500, 5381875, 10763750, 21527500]

約数ペア:

[(1, 21527500), (2, 10763750), (4, 5381875), (5, 4305500), (10, 2152750), (20, 1076375), (25, 861100), (50, 430550), (79, 272500), (100, 215275), (109, 197500), (125, 172220), (158, 136250), (218, 98750), (250, 86110), (316, 68125), (395, 54500), (436, 49375), (500, 43055), (545, 39500), (625, 34444), (790, 27250), (1090, 19750), (1250, 17222), (1580, 13625), (1975, 10900), (2180, 9875), (2500, 8611), (2725, 7900), (3950, 5450)]