18548019

素因数分解:

$3^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:464

約数の個数: 36

約数和(自身を含む): 31495464

約数和(自身を除く): 12947445

約数列:

[1, 3, 7, 9, 21, 49, 63, 137, 147, 307, 411, 441, 921, 959, 1233, 2149, 2763, 2877, 6447, 6713, 8631, 15043, 19341, 20139, 42059, 45129, 60417, 126177, 135387, 294413, 378531, 883239, 2060891, 2649717, 6182673, 18548019]

約数ペア:

[(1, 18548019), (3, 6182673), (7, 2649717), (9, 2060891), (21, 883239), (49, 378531), (63, 294413), (137, 135387), (147, 126177), (307, 60417), (411, 45129), (441, 42059), (921, 20139), (959, 19341), (1233, 15043), (2149, 8631), (2763, 6713), (2877, 6447)]