20641605

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{3943}}^1$

素因数の和:4300

約数の個数: 16

約数和(自身を含む): 33129600

約数和(自身を除く): 12487995

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 3943, 5235, 11829, 19715, 59145, 1376107, 4128321, 6880535, 20641605]

約数ペア:

[(1, 20641605), (3, 6880535), (5, 4128321), (15, 1376107), (349, 59145), (1047, 19715), (1745, 11829), (3943, 5235)]