90990760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:311

約数の個数: 128

約数和(自身を含む): 248832000

約数和(自身を除く): 157841240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 71, 92, 115, 140, 142, 161, 184, 199, 230, 280, 284, 322, 355, 398, 460, 497, 568, 644, 710, 796, 805, 920, 994, 995, 1288, 1393, 1420, 1592, 1610, 1633, 1988, 1990, 2485, 2786, 2840, 3220, 3266, 3976, 3980, 4577, 4970, 5572, 6440, 6532, 6965, 7960, 8165, 9154, 9940, 11144, 11431, 13064, 13930, 14129, 16330, 18308, 19880, 22862, 22885, 27860, 28258, 32039, 32660, 36616, 45724, 45770, 55720, 56516, 57155, 64078, 65320, 70645, 91448, 91540, 98903, 113032, 114310, 128156, 141290, 160195, 183080, 197806, 228620, 256312, 282580, 320390, 324967, 395612, 457240, 494515, 565160, 640780, 649934, 791224, 989030, 1281560, 1299868, 1624835, 1978060, 2274769, 2599736, 3249670, 3956120, 4549538, 6499340, 9099076, 11373845, 12998680, 18198152, 22747690, 45495380, 90990760]

約数ペア:

[(1, 90990760), (2, 45495380), (4, 22747690), (5, 18198152), (7, 12998680), (8, 11373845), (10, 9099076), (14, 6499340), (20, 4549538), (23, 3956120), (28, 3249670), (35, 2599736), (40, 2274769), (46, 1978060), (56, 1624835), (70, 1299868), (71, 1281560), (92, 989030), (115, 791224), (140, 649934), (142, 640780), (161, 565160), (184, 494515), (199, 457240), (230, 395612), (280, 324967), (284, 320390), (322, 282580), (355, 256312), (398, 228620), (460, 197806), (497, 183080), (568, 160195), (644, 141290), (710, 128156), (796, 114310), (805, 113032), (920, 98903), (994, 91540), (995, 91448), (1288, 70645), (1393, 65320), (1420, 64078), (1592, 57155), (1610, 56516), (1633, 55720), (1988, 45770), (1990, 45724), (2485, 36616), (2786, 32660), (2840, 32039), (3220, 28258), (3266, 27860), (3976, 22885), (3980, 22862), (4577, 19880), (4970, 18308), (5572, 16330), (6440, 14129), (6532, 13930), (6965, 13064), (7960, 11431), (8165, 11144), (9154, 9940)]