21943131

素因数分解:

$3^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{1321}}^1$

素因数の和:1451

約数の個数: 24

約数和(自身を含む): 34361424

約数和(自身を除く): 12418293

約数列:

[1, 3, 7, 21, 49, 113, 147, 339, 791, 1321, 2373, 3963, 5537, 9247, 16611, 27741, 64729, 149273, 194187, 447819, 1044911, 3134733, 7314377, 21943131]

約数ペア:

[(1, 21943131), (3, 7314377), (7, 3134733), (21, 1044911), (49, 447819), (113, 194187), (147, 149273), (339, 64729), (791, 27741), (1321, 16611), (2373, 9247), (3963, 5537)]