9905680

素因数分解:

$2^4\times 5^1\times {\mathrm{123821}}^1$

素因数の和:123834

約数の個数: 20

約数和(自身を含む): 23030892

約数和(自身を除く): 13125212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 123821, 247642, 495284, 619105, 990568, 1238210, 1981136, 2476420, 4952840, 9905680]

約数ペア:

[(1, 9905680), (2, 4952840), (4, 2476420), (5, 1981136), (8, 1238210), (10, 990568), (16, 619105), (20, 495284), (40, 247642), (80, 123821)]