19980368

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40283}}^1$

素因数の和:40322

約数の個数: 20

約数和(自身を含む): 39961728

約数和(自身を除く): 19981360

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40283, 80566, 161132, 322264, 644528, 1248773, 2497546, 4995092, 9990184, 19980368]

約数ペア:

[(1, 19980368), (2, 9990184), (4, 4995092), (8, 2497546), (16, 1248773), (31, 644528), (62, 322264), (124, 161132), (248, 80566), (496, 40283)]