128859664

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{40471}}^1$

素因数の和:40678

約数の個数: 20

約数和(自身を含む): 250926400

約数和(自身を除く): 122066736

約数列:

[1, 2, 4, 8, 16, 199, 398, 796, 1592, 3184, 40471, 80942, 161884, 323768, 647536, 8053729, 16107458, 32214916, 64429832, 128859664]

約数ペア:

[(1, 128859664), (2, 64429832), (4, 32214916), (8, 16107458), (16, 8053729), (199, 647536), (398, 323768), (796, 161884), (1592, 80942), (3184, 40471)]