18000180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9091}}^1$

素因数の和:9117

約数の個数: 72

約数和(自身を含む): 59570784

約数和(自身を除く): 41570604

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9091, 18182, 27273, 36364, 45455, 54546, 81819, 90910, 100001, 109092, 136365, 163638, 181820, 200002, 272730, 300003, 327276, 400004, 409095, 500005, 545460, 600006, 818190, 900009, 1000010, 1200012, 1500015, 1636380, 1800018, 2000020, 3000030, 3600036, 4500045, 6000060, 9000090, 18000180]

約数ペア:

[(1, 18000180), (2, 9000090), (3, 6000060), (4, 4500045), (5, 3600036), (6, 3000030), (9, 2000020), (10, 1800018), (11, 1636380), (12, 1500015), (15, 1200012), (18, 1000010), (20, 900009), (22, 818190), (30, 600006), (33, 545460), (36, 500005), (44, 409095), (45, 400004), (55, 327276), (60, 300003), (66, 272730), (90, 200002), (99, 181820), (110, 163638), (132, 136365), (165, 109092), (180, 100001), (198, 90910), (220, 81819), (330, 54546), (396, 45455), (495, 36364), (660, 27273), (990, 18182), (1980, 9091)]