21641561557

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{137303}}^1$

素因数の和:137433

約数の個数: 32

約数和(自身を含む): 28471357440

約数和(自身を除く): 6829795883

約数列:

[1, 7, 11, 23, 77, 89, 161, 253, 623, 979, 1771, 2047, 6853, 14329, 22517, 137303, 157619, 961121, 1510333, 3157969, 10572331, 12219967, 22105783, 34737659, 85539769, 134419637, 243163613, 281059241, 940937459, 1967414687, 3091651651, 21641561557]

約数ペア:

[(1, 21641561557), (7, 3091651651), (11, 1967414687), (23, 940937459), (77, 281059241), (89, 243163613), (161, 134419637), (253, 85539769), (623, 34737659), (979, 22105783), (1771, 12219967), (2047, 10572331), (6853, 3157969), (14329, 1510333), (22517, 961121), (137303, 157619)]