19905741

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:202

約数の個数: 36

約数和(自身を含む): 31142748

約数和(自身を除く): 11237007

約数列:

[1, 3, 9, 23, 37, 69, 111, 113, 207, 333, 339, 529, 851, 1017, 1587, 2553, 2599, 4181, 4761, 7659, 7797, 12543, 19573, 23391, 37629, 58719, 59777, 96163, 176157, 179331, 288489, 537993, 865467, 2211749, 6635247, 19905741]

約数ペア:

[(1, 19905741), (3, 6635247), (9, 2211749), (23, 865467), (37, 537993), (69, 288489), (111, 179331), (113, 176157), (207, 96163), (333, 59777), (339, 58719), (529, 37629), (851, 23391), (1017, 19573), (1587, 12543), (2553, 7797), (2599, 7659), (4181, 4761)]