81031408

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{269}}^1\times {\mathrm{281}}^1$

素因数の和:625

約数の個数: 40

約数和(自身を含む): 160503120

約数和(自身を除く): 79471712

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 269, 281, 536, 538, 562, 1072, 1076, 1124, 2152, 2248, 4304, 4496, 18023, 18827, 36046, 37654, 72092, 75308, 75589, 144184, 150616, 151178, 288368, 301232, 302356, 604712, 1209424, 5064463, 10128926, 20257852, 40515704, 81031408]

約数ペア:

[(1, 81031408), (2, 40515704), (4, 20257852), (8, 10128926), (16, 5064463), (67, 1209424), (134, 604712), (268, 302356), (269, 301232), (281, 288368), (536, 151178), (538, 150616), (562, 144184), (1072, 75589), (1076, 75308), (1124, 72092), (2152, 37654), (2248, 36046), (4304, 18827), (4496, 18023)]