81914768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1979}}^1$

素因数の和:2199

約数の個数: 40

約数和(自身を含む): 171864000

約数和(自身を除く): 89949232

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 199, 208, 398, 796, 1592, 1979, 2587, 3184, 3958, 5174, 7916, 10348, 15832, 20696, 25727, 31664, 41392, 51454, 102908, 205816, 393821, 411632, 787642, 1575284, 3150568, 5119673, 6301136, 10239346, 20478692, 40957384, 81914768]

約数ペア:

[(1, 81914768), (2, 40957384), (4, 20478692), (8, 10239346), (13, 6301136), (16, 5119673), (26, 3150568), (52, 1575284), (104, 787642), (199, 411632), (208, 393821), (398, 205816), (796, 102908), (1592, 51454), (1979, 41392), (2587, 31664), (3184, 25727), (3958, 20696), (5174, 15832), (7916, 10348)]