199317820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{1931}}^1$

素因数の和:2350

約数の個数: 48

約数和(自身を含む): 452134368

約数和(自身を除く): 252816548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 397, 794, 1588, 1931, 1985, 3862, 3970, 5161, 7724, 7940, 9655, 10322, 19310, 20644, 25103, 25805, 38620, 50206, 51610, 100412, 103220, 125515, 251030, 502060, 766607, 1533214, 3066428, 3833035, 7666070, 9965891, 15332140, 19931782, 39863564, 49829455, 99658910, 199317820]

約数ペア:

[(1, 199317820), (2, 99658910), (4, 49829455), (5, 39863564), (10, 19931782), (13, 15332140), (20, 9965891), (26, 7666070), (52, 3833035), (65, 3066428), (130, 1533214), (260, 766607), (397, 502060), (794, 251030), (1588, 125515), (1931, 103220), (1985, 100412), (3862, 51610), (3970, 50206), (5161, 38620), (7724, 25805), (7940, 25103), (9655, 20644), (10322, 19310)]