21484580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82633}}^1$

素因数の和:82655

約数の個数: 24

約数和(自身を含む): 48588792

約数和(自身を除く): 27104212

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82633, 165266, 330532, 413165, 826330, 1074229, 1652660, 2148458, 4296916, 5371145, 10742290, 21484580]

約数ペア:

[(1, 21484580), (2, 10742290), (4, 5371145), (5, 4296916), (10, 2148458), (13, 1652660), (20, 1074229), (26, 826330), (52, 413165), (65, 330532), (130, 165266), (260, 82633)]