20871370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5179}}^1$

素因数の和:5230

約数の個数: 32

約数和(自身を含む): 41771520

約数和(自身を除く): 20900150

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5179, 10358, 25895, 51790, 67327, 134654, 160549, 321098, 336635, 673270, 802745, 1605490, 2087137, 4174274, 10435685, 20871370]

約数ペア:

[(1, 20871370), (2, 10435685), (5, 4174274), (10, 2087137), (13, 1605490), (26, 802745), (31, 673270), (62, 336635), (65, 321098), (130, 160549), (155, 134654), (310, 67327), (403, 51790), (806, 25895), (2015, 10358), (4030, 5179)]