21216668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{1259}}^1$

素因数の和:1657

約数の個数: 24

約数和(自身を含む): 40642560

約数和(自身を除く): 19425892

約数列:

[1, 2, 4, 11, 22, 44, 383, 766, 1259, 1532, 2518, 4213, 5036, 8426, 13849, 16852, 27698, 55396, 482197, 964394, 1928788, 5304167, 10608334, 21216668]

約数ペア:

[(1, 21216668), (2, 10608334), (4, 5304167), (11, 1928788), (22, 964394), (44, 482197), (383, 55396), (766, 27698), (1259, 16852), (1532, 13849), (2518, 8426), (4213, 5036)]