28507557

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 43497216

約数和(自身を除く): 14989659

約数列:

[1, 3, 13, 23, 39, 61, 69, 183, 299, 521, 793, 897, 1403, 1563, 2379, 4209, 6773, 11983, 18239, 20319, 31781, 35949, 54717, 95343, 155779, 413153, 467337, 730963, 1239459, 2192889, 9502519, 28507557]

約数ペア:

[(1, 28507557), (3, 9502519), (13, 2192889), (23, 1239459), (39, 730963), (61, 467337), (69, 413153), (183, 155779), (299, 95343), (521, 54717), (793, 35949), (897, 31781), (1403, 20319), (1563, 18239), (2379, 11983), (4209, 6773)]