81648215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{8581}}^1$

素因数の和:8770

約数の個数: 16

約数和(自身を含む): 107515296

約数和(自身を除く): 25867081

約数列:

[1, 5, 11, 55, 173, 865, 1903, 8581, 9515, 42905, 94391, 471955, 1484513, 7422565, 16329643, 81648215]

約数ペア:

[(1, 81648215), (5, 16329643), (11, 7422565), (55, 1484513), (173, 471955), (865, 94391), (1903, 42905), (8581, 9515)]