21604750

素因数分解:

$2^1\times 5^3\times {\mathrm{89}}^1\times {\mathrm{971}}^1$

素因数の和:1077

約数の個数: 32

約数和(自身を含む): 40940640

約数和(自身を除く): 19335890

約数列:

[1, 2, 5, 10, 25, 50, 89, 125, 178, 250, 445, 890, 971, 1942, 2225, 4450, 4855, 9710, 11125, 22250, 24275, 48550, 86419, 121375, 172838, 242750, 432095, 864190, 2160475, 4320950, 10802375, 21604750]

約数ペア:

[(1, 21604750), (2, 10802375), (5, 4320950), (10, 2160475), (25, 864190), (50, 432095), (89, 242750), (125, 172838), (178, 121375), (250, 86419), (445, 48550), (890, 24275), (971, 22250), (1942, 11125), (2225, 9710), (4450, 4855)]