21022520

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4651}}^1$

素因数の和:4775

約数の個数: 32

約数和(自身を含む): 47729520

約数和(自身を除く): 26707000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4651, 9302, 18604, 23255, 37208, 46510, 93020, 186040, 525563, 1051126, 2102252, 2627815, 4204504, 5255630, 10511260, 21022520]

約数ペア:

[(1, 21022520), (2, 10511260), (4, 5255630), (5, 4204504), (8, 2627815), (10, 2102252), (20, 1051126), (40, 525563), (113, 186040), (226, 93020), (452, 46510), (565, 37208), (904, 23255), (1130, 18604), (2260, 9302), (4520, 4651)]