21915747

素因数分解:

$3^2\times 7^1\times {\mathrm{233}}^1\times {\mathrm{1493}}^1$

素因数の和:1739

約数の個数: 24

約数和(自身を含む): 36357984

約数和(自身を除く): 14442237

約数列:

[1, 3, 7, 9, 21, 63, 233, 699, 1493, 1631, 2097, 4479, 4893, 10451, 13437, 14679, 31353, 94059, 347869, 1043607, 2435083, 3130821, 7305249, 21915747]

約数ペア:

[(1, 21915747), (3, 7305249), (7, 3130821), (9, 2435083), (21, 1043607), (63, 347869), (233, 94059), (699, 31353), (1493, 14679), (1631, 13437), (2097, 10451), (4479, 4893)]