16660280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 48384000

約数和(自身を除く): 31723720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 91, 92, 104, 115, 130, 140, 161, 182, 184, 199, 230, 260, 280, 299, 322, 364, 398, 455, 460, 520, 598, 644, 728, 796, 805, 910, 920, 995, 1196, 1288, 1393, 1495, 1592, 1610, 1820, 1990, 2093, 2392, 2587, 2786, 2990, 3220, 3640, 3980, 4186, 4577, 5174, 5572, 5980, 6440, 6965, 7960, 8372, 9154, 10348, 10465, 11144, 11960, 12935, 13930, 16744, 18109, 18308, 20696, 20930, 22885, 25870, 27860, 32039, 36218, 36616, 41860, 45770, 51740, 55720, 59501, 64078, 72436, 83720, 90545, 91540, 103480, 119002, 128156, 144872, 160195, 181090, 183080, 238004, 256312, 297505, 320390, 362180, 416507, 476008, 595010, 640780, 724360, 833014, 1190020, 1281560, 1666028, 2082535, 2380040, 3332056, 4165070, 8330140, 16660280]

約数ペア:

[(1, 16660280), (2, 8330140), (4, 4165070), (5, 3332056), (7, 2380040), (8, 2082535), (10, 1666028), (13, 1281560), (14, 1190020), (20, 833014), (23, 724360), (26, 640780), (28, 595010), (35, 476008), (40, 416507), (46, 362180), (52, 320390), (56, 297505), (65, 256312), (70, 238004), (91, 183080), (92, 181090), (104, 160195), (115, 144872), (130, 128156), (140, 119002), (161, 103480), (182, 91540), (184, 90545), (199, 83720), (230, 72436), (260, 64078), (280, 59501), (299, 55720), (322, 51740), (364, 45770), (398, 41860), (455, 36616), (460, 36218), (520, 32039), (598, 27860), (644, 25870), (728, 22885), (796, 20930), (805, 20696), (910, 18308), (920, 18109), (995, 16744), (1196, 13930), (1288, 12935), (1393, 11960), (1495, 11144), (1592, 10465), (1610, 10348), (1820, 9154), (1990, 8372), (2093, 7960), (2392, 6965), (2587, 6440), (2786, 5980), (2990, 5572), (3220, 5174), (3640, 4577), (3980, 4186)]