21405918

素因数分解:

$2^1\times 3^1\times {\mathrm{1109}}^1\times {\mathrm{3217}}^1$

素因数の和:4331

約数の個数: 16

約数和(自身を含む): 42863760

約数和(自身を除く): 21457842

約数列:

[1, 2, 3, 6, 1109, 2218, 3217, 3327, 6434, 6654, 9651, 19302, 3567653, 7135306, 10702959, 21405918]

約数ペア:

[(1, 21405918), (2, 10702959), (3, 7135306), (6, 3567653), (1109, 19302), (2218, 9651), (3217, 6654), (3327, 6434)]