81384860

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{36011}}^1$

素因数の和:36133

約数の個数: 24

約数和(自身を含む): 172425456

約数和(自身を除く): 91040596

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 36011, 72022, 144044, 180055, 360110, 720220, 4069243, 8138486, 16276972, 20346215, 40692430, 81384860]

約数ペア:

[(1, 81384860), (2, 40692430), (4, 20346215), (5, 16276972), (10, 8138486), (20, 4069243), (113, 720220), (226, 360110), (452, 180055), (565, 144044), (1130, 72022), (2260, 36011)]