80898890

素因数分解:

$2^1\times 5^1\times {\mathrm{2521}}^1\times {\mathrm{3209}}^1$

素因数の和:5737

約数の個数: 16

約数和(自身を含む): 145721160

約数和(自身を除く): 64822270

約数列:

[1, 2, 5, 10, 2521, 3209, 5042, 6418, 12605, 16045, 25210, 32090, 8089889, 16179778, 40449445, 80898890]

約数ペア:

[(1, 80898890), (2, 40449445), (5, 16179778), (10, 8089889), (2521, 32090), (3209, 25210), (5042, 16045), (6418, 12605)]