208165940

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 443251200

約数和(自身を除く): 235085260

約数列:

[1, 2, 4, 5, 10, 20, 193, 199, 271, 386, 398, 542, 772, 796, 965, 995, 1084, 1355, 1930, 1990, 2710, 3860, 3980, 5420, 38407, 52303, 53929, 76814, 104606, 107858, 153628, 192035, 209212, 215716, 261515, 269645, 384070, 523030, 539290, 768140, 1046060, 1078580, 10408297, 20816594, 41633188, 52041485, 104082970, 208165940]

約数ペア:

[(1, 208165940), (2, 104082970), (4, 52041485), (5, 41633188), (10, 20816594), (20, 10408297), (193, 1078580), (199, 1046060), (271, 768140), (386, 539290), (398, 523030), (542, 384070), (772, 269645), (796, 261515), (965, 215716), (995, 209212), (1084, 192035), (1355, 153628), (1930, 107858), (1990, 104606), (2710, 76814), (3860, 53929), (3980, 52303), (5420, 38407)]