31314640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{281}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 83923200

約数和(自身を除く): 52608560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 199, 280, 281, 398, 560, 562, 796, 995, 1124, 1393, 1405, 1592, 1967, 1990, 2248, 2786, 2810, 3184, 3934, 3980, 4496, 5572, 5620, 6965, 7868, 7960, 9835, 11144, 11240, 13930, 15736, 15920, 19670, 22288, 22480, 27860, 31472, 39340, 55720, 55919, 78680, 111440, 111838, 157360, 223676, 279595, 391433, 447352, 559190, 782866, 894704, 1118380, 1565732, 1957165, 2236760, 3131464, 3914330, 4473520, 6262928, 7828660, 15657320, 31314640]

約数ペア:

[(1, 31314640), (2, 15657320), (4, 7828660), (5, 6262928), (7, 4473520), (8, 3914330), (10, 3131464), (14, 2236760), (16, 1957165), (20, 1565732), (28, 1118380), (35, 894704), (40, 782866), (56, 559190), (70, 447352), (80, 391433), (112, 279595), (140, 223676), (199, 157360), (280, 111838), (281, 111440), (398, 78680), (560, 55919), (562, 55720), (796, 39340), (995, 31472), (1124, 27860), (1393, 22480), (1405, 22288), (1592, 19670), (1967, 15920), (1990, 15736), (2248, 13930), (2786, 11240), (2810, 11144), (3184, 9835), (3934, 7960), (3980, 7868), (4496, 6965), (5572, 5620)]