18000720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1087}}^1$

素因数の和:1129

約数の個数: 120

約数和(自身を含む): 63138816

約数和(自身を除く): 45138096

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1087, 1104, 1380, 1656, 1840, 2070, 2174, 2760, 3261, 3312, 4140, 4348, 5435, 5520, 6522, 8280, 8696, 9783, 10870, 13044, 16305, 16560, 17392, 19566, 21740, 25001, 26088, 32610, 39132, 43480, 48915, 50002, 52176, 65220, 75003, 78264, 86960, 97830, 100004, 125005, 130440, 150006, 156528, 195660, 200008, 225009, 250010, 260880, 300012, 375015, 391320, 400016, 450018, 500020, 600024, 750030, 782640, 900036, 1000040, 1125045, 1200048, 1500060, 1800072, 2000080, 2250090, 3000120, 3600144, 4500180, 6000240, 9000360, 18000720]

約数ペア:

[(1, 18000720), (2, 9000360), (3, 6000240), (4, 4500180), (5, 3600144), (6, 3000120), (8, 2250090), (9, 2000080), (10, 1800072), (12, 1500060), (15, 1200048), (16, 1125045), (18, 1000040), (20, 900036), (23, 782640), (24, 750030), (30, 600024), (36, 500020), (40, 450018), (45, 400016), (46, 391320), (48, 375015), (60, 300012), (69, 260880), (72, 250010), (80, 225009), (90, 200008), (92, 195660), (115, 156528), (120, 150006), (138, 130440), (144, 125005), (180, 100004), (184, 97830), (207, 86960), (230, 78264), (240, 75003), (276, 65220), (345, 52176), (360, 50002), (368, 48915), (414, 43480), (460, 39132), (552, 32610), (690, 26088), (720, 25001), (828, 21740), (920, 19566), (1035, 17392), (1087, 16560), (1104, 16305), (1380, 13044), (1656, 10870), (1840, 9783), (2070, 8696), (2174, 8280), (2760, 6522), (3261, 5520), (3312, 5435), (4140, 4348)]