81190408

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{3923}}^1$

素因数の和:4141

約数の個数: 32

約数和(自身を含む): 164808000

約数和(自身を除く): 83617592

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 796, 1592, 2587, 3923, 5174, 7846, 10348, 15692, 20696, 31384, 50999, 101998, 203996, 407992, 780677, 1561354, 3122708, 6245416, 10148801, 20297602, 40595204, 81190408]

約数ペア:

[(1, 81190408), (2, 40595204), (4, 20297602), (8, 10148801), (13, 6245416), (26, 3122708), (52, 1561354), (104, 780677), (199, 407992), (398, 203996), (796, 101998), (1592, 50999), (2587, 31384), (3923, 20696), (5174, 15692), (7846, 10348)]