20387655

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3307}}^1$

素因数の和:3455

約数の個数: 24

約数和(自身を含む): 35607312

約数和(自身を除く): 15219657

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 3307, 6165, 9921, 16535, 29763, 49605, 148815, 453059, 1359177, 2265295, 4077531, 6795885, 20387655]

約数ペア:

[(1, 20387655), (3, 6795885), (5, 4077531), (9, 2265295), (15, 1359177), (45, 453059), (137, 148815), (411, 49605), (685, 29763), (1233, 16535), (2055, 9921), (3307, 6165)]