21331228

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{239}}^1\times {\mathrm{421}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 38283840

約数和(自身を除く): 16952612

約数列:

[1, 2, 4, 53, 106, 212, 239, 421, 478, 842, 956, 1684, 12667, 22313, 25334, 44626, 50668, 89252, 100619, 201238, 402476, 5332807, 10665614, 21331228]

約数ペア:

[(1, 21331228), (2, 10665614), (4, 5332807), (53, 402476), (106, 201238), (212, 100619), (239, 89252), (421, 50668), (478, 44626), (842, 25334), (956, 22313), (1684, 12667)]