81336872

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{2689}}^1$

素因数の和:2913

約数の個数: 32

約数和(自身を含む): 161400000

約数和(自身を除く): 80063128

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 199, 398, 796, 1592, 2689, 3781, 5378, 7562, 10756, 15124, 21512, 30248, 51091, 102182, 204364, 408728, 535111, 1070222, 2140444, 4280888, 10167109, 20334218, 40668436, 81336872]

約数ペア:

[(1, 81336872), (2, 40668436), (4, 20334218), (8, 10167109), (19, 4280888), (38, 2140444), (76, 1070222), (152, 535111), (199, 408728), (398, 204364), (796, 102182), (1592, 51091), (2689, 30248), (3781, 21512), (5378, 15124), (7562, 10756)]