137720919

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{25321}}^1$

素因数の和:25375

約数の個数: 24

約数和(自身を含む): 219389808

約数和(自身を除く): 81668889

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 25321, 75963, 177247, 531741, 936877, 1240729, 2810631, 3722187, 6558139, 19674417, 45906973, 137720919]

約数ペア:

[(1, 137720919), (3, 45906973), (7, 19674417), (21, 6558139), (37, 3722187), (49, 2810631), (111, 1240729), (147, 936877), (259, 531741), (777, 177247), (1813, 75963), (5439, 25321)]