18843993

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2647}}^1$

素因数の和:2773

約数の個数: 24

約数和(自身を含む): 31394688

約数和(自身を除く): 12550695

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2647, 7119, 7941, 18529, 23823, 55587, 166761, 299111, 897333, 2093777, 2691999, 6281331, 18843993]

約数ペア:

[(1, 18843993), (3, 6281331), (7, 2691999), (9, 2093777), (21, 897333), (63, 299111), (113, 166761), (339, 55587), (791, 23823), (1017, 18529), (2373, 7941), (2647, 7119)]