218860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 475776

約数和(自身を除く): 256916

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 353, 620, 706, 1412, 1765, 3530, 7060, 10943, 21886, 43772, 54715, 109430, 218860]

約数ペア:

[(1, 218860), (2, 109430), (4, 54715), (5, 43772), (10, 21886), (20, 10943), (31, 7060), (62, 3530), (124, 1765), (155, 1412), (310, 706), (353, 620)]