18720806

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{571}}^1$

素因数の和:696

約数の個数: 24

約数和(自身を含む): 30774744

約数和(自身を除く): 12053938

約数列:

[1, 2, 13, 26, 97, 169, 194, 338, 571, 1142, 1261, 2522, 7423, 14846, 16393, 32786, 55387, 96499, 110774, 192998, 720031, 1440062, 9360403, 18720806]

約数ペア:

[(1, 18720806), (2, 9360403), (13, 1440062), (26, 720031), (97, 192998), (169, 110774), (194, 96499), (338, 55387), (571, 32786), (1142, 16393), (1261, 14846), (2522, 7423)]