21209738

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{50741}}^1$

素因数の和:50773

約数の個数: 16

約数和(自身を含む): 36534240

約数和(自身を除く): 15324502

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 50741, 101482, 558151, 964079, 1116302, 1928158, 10604869, 21209738]

約数ペア:

[(1, 21209738), (2, 10604869), (11, 1928158), (19, 1116302), (22, 964079), (38, 558151), (209, 101482), (418, 50741)]