21976339

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{12409}}^1$

素因数の和:12450

約数の個数: 16

約数和(自身を含む): 28592640

約数和(自身を除く): 6616301

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 12409, 86863, 136499, 285407, 955493, 1997849, 3139477, 21976339]

約数ペア:

[(1, 21976339), (7, 3139477), (11, 1997849), (23, 955493), (77, 285407), (161, 136499), (253, 86863), (1771, 12409)]