81296860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{140167}}^1$

素因数の和:140205

約数の個数: 24

約数和(自身を含む): 176611680

約数和(自身を除く): 95314820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 140167, 280334, 560668, 700835, 1401670, 2803340, 4064843, 8129686, 16259372, 20324215, 40648430, 81296860]

約数ペア:

[(1, 81296860), (2, 40648430), (4, 20324215), (5, 16259372), (10, 8129686), (20, 4064843), (29, 2803340), (58, 1401670), (116, 700835), (145, 560668), (290, 280334), (580, 140167)]