19991145

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{12227}}^1$

素因数の和:12344

約数の個数: 16

約数和(自身を含む): 32281920

約数和(自身を除く): 12290775

約数列:

[1, 3, 5, 15, 109, 327, 545, 1635, 12227, 36681, 61135, 183405, 1332743, 3998229, 6663715, 19991145]

約数ペア:

[(1, 19991145), (3, 6663715), (5, 3998229), (15, 1332743), (109, 183405), (327, 61135), (545, 36681), (1635, 12227)]