720490

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{661}}^1$

素因数の和:777

約数の個数: 16

約数和(自身を含む): 1310760

約数和(自身を除く): 590270

約数列:

[1, 2, 5, 10, 109, 218, 545, 661, 1090, 1322, 3305, 6610, 72049, 144098, 360245, 720490]

約数ペア:

[(1, 720490), (2, 360245), (5, 144098), (10, 72049), (109, 6610), (218, 3305), (545, 1322), (661, 1090)]