261738205

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3769}}^1$

素因数の和:3853

約数の個数: 32

約数和(自身を含む): 358300800

約数和(自身を除く): 96562595

約数列:

[1, 5, 17, 19, 43, 85, 95, 215, 323, 731, 817, 1615, 3655, 3769, 4085, 13889, 18845, 64073, 69445, 71611, 162067, 320365, 358055, 810335, 1217387, 2755139, 3079273, 6086935, 13775695, 15396365, 52347641, 261738205]

約数ペア:

[(1, 261738205), (5, 52347641), (17, 15396365), (19, 13775695), (43, 6086935), (85, 3079273), (95, 2755139), (215, 1217387), (323, 810335), (731, 358055), (817, 320365), (1615, 162067), (3655, 71611), (3769, 69445), (4085, 64073), (13889, 18845)]