20788155

素因数分解:

$3^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{701}}^1$

素因数の和:1371

約数の個数: 24

約数和(自身を含む): 36138960

約数和(自身を除く): 15350805

約数列:

[1, 3, 5, 9, 15, 45, 659, 701, 1977, 2103, 3295, 3505, 5931, 6309, 9885, 10515, 29655, 31545, 461959, 1385877, 2309795, 4157631, 6929385, 20788155]

約数ペア:

[(1, 20788155), (3, 6929385), (5, 4157631), (9, 2309795), (15, 1385877), (45, 461959), (659, 31545), (701, 29655), (1977, 10515), (2103, 9885), (3295, 6309), (3505, 5931)]