84781960

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10651}}^1$

素因数の和:10861

約数の個数: 32

約数和(自身を含む): 191736000

約数和(自身を除く): 106954040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 10651, 21302, 42604, 53255, 85208, 106510, 213020, 426040, 2119549, 4239098, 8478196, 10597745, 16956392, 21195490, 42390980, 84781960]

約数ペア:

[(1, 84781960), (2, 42390980), (4, 21195490), (5, 16956392), (8, 10597745), (10, 8478196), (20, 4239098), (40, 2119549), (199, 426040), (398, 213020), (796, 106510), (995, 85208), (1592, 53255), (1990, 42604), (3980, 21302), (7960, 10651)]