21329620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82037}}^1$

素因数の和:82059

約数の個数: 24

約数和(自身を含む): 48238344

約数和(自身を除く): 26908724

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82037, 164074, 328148, 410185, 820370, 1066481, 1640740, 2132962, 4265924, 5332405, 10664810, 21329620]

約数ペア:

[(1, 21329620), (2, 10664810), (4, 5332405), (5, 4265924), (10, 2132962), (13, 1640740), (20, 1066481), (26, 820370), (52, 410185), (65, 328148), (130, 164074), (260, 82037)]