21690218

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{1907}}^1$

素因数の和:1978

約数の個数: 24

約数和(自身を含む): 36542016

約数和(自身を除く): 14851798

約数列:

[1, 2, 11, 22, 47, 94, 121, 242, 517, 1034, 1907, 3814, 5687, 11374, 20977, 41954, 89629, 179258, 230747, 461494, 985919, 1971838, 10845109, 21690218]

約数ペア:

[(1, 21690218), (2, 10845109), (11, 1971838), (22, 985919), (47, 461494), (94, 230747), (121, 179258), (242, 89629), (517, 41954), (1034, 20977), (1907, 11374), (3814, 5687)]