128668220

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{7253}}^1$

素因数の和:8149

約数の個数: 24

約数和(自身を含む): 270545184

約数和(自身を除く): 141876964

約数列:

[1, 2, 4, 5, 10, 20, 887, 1774, 3548, 4435, 7253, 8870, 14506, 17740, 29012, 36265, 72530, 145060, 6433411, 12866822, 25733644, 32167055, 64334110, 128668220]

約数ペア:

[(1, 128668220), (2, 64334110), (4, 32167055), (5, 25733644), (10, 12866822), (20, 6433411), (887, 145060), (1774, 72530), (3548, 36265), (4435, 29012), (7253, 17740), (8870, 14506)]