216560

素因数分解:

$2^4\times 5^1\times {\mathrm{2707}}^1$

素因数の和:2720

約数の個数: 20

約数和(自身を含む): 503688

約数和(自身を除く): 287128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2707, 5414, 10828, 13535, 21656, 27070, 43312, 54140, 108280, 216560]

約数ペア:

[(1, 216560), (2, 108280), (4, 54140), (5, 43312), (8, 27070), (10, 21656), (16, 13535), (20, 10828), (40, 5414), (80, 2707)]