20478033

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 30476160

約数和(自身を除く): 9998127

約数列:

[1, 3, 9, 71, 73, 213, 219, 439, 639, 657, 1317, 3951, 5183, 15549, 31169, 32047, 46647, 93507, 96141, 280521, 288423, 2275337, 6826011, 20478033]

約数ペア:

[(1, 20478033), (3, 6826011), (9, 2275337), (71, 288423), (73, 280521), (213, 96141), (219, 93507), (439, 46647), (639, 32047), (657, 31169), (1317, 15549), (3951, 5183)]