21264140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34297}}^1$

素因数の和:34337

約数の個数: 24

約数和(自身を含む): 46096512

約数和(自身を除く): 24832372

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34297, 68594, 137188, 171485, 342970, 685940, 1063207, 2126414, 4252828, 5316035, 10632070, 21264140]

約数ペア:

[(1, 21264140), (2, 10632070), (4, 5316035), (5, 4252828), (10, 2126414), (20, 1063207), (31, 685940), (62, 342970), (124, 171485), (155, 137188), (310, 68594), (620, 34297)]