19972271

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{457}}^1$

素因数の和:634

約数の個数: 16

約数和(自身を含む): 22753440

約数和(自身を除く): 2781169

約数列:

[1, 11, 29, 137, 319, 457, 1507, 3973, 5027, 13253, 43703, 62609, 145783, 688699, 1815661, 19972271]

約数ペア:

[(1, 19972271), (11, 1815661), (29, 688699), (137, 145783), (319, 62609), (457, 43703), (1507, 13253), (3973, 5027)]