21331037

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 27820800

約数和(自身を除く): 6489763

約数列:

[1, 7, 13, 29, 59, 91, 137, 203, 377, 413, 767, 959, 1711, 1781, 2639, 3973, 5369, 8083, 11977, 12467, 22243, 27811, 51649, 56581, 105079, 155701, 234407, 361543, 735553, 1640849, 3047291, 21331037]

約数ペア:

[(1, 21331037), (7, 3047291), (13, 1640849), (29, 735553), (59, 361543), (91, 234407), (137, 155701), (203, 105079), (377, 56581), (413, 51649), (767, 27811), (959, 22243), (1711, 12467), (1781, 11977), (2639, 8083), (3973, 5369)]