291280280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:313

約数の個数: 128

約数和(自身を含む): 722304000

約数和(自身を除く): 431023720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 43, 46, 74, 86, 92, 115, 148, 172, 184, 185, 199, 215, 230, 296, 344, 370, 398, 430, 460, 740, 796, 851, 860, 920, 989, 995, 1480, 1591, 1592, 1702, 1720, 1978, 1990, 3182, 3404, 3956, 3980, 4255, 4577, 4945, 6364, 6808, 7363, 7912, 7955, 7960, 8510, 8557, 9154, 9890, 12728, 14726, 15910, 17020, 17114, 18308, 19780, 22885, 29452, 31820, 34040, 34228, 36593, 36616, 36815, 39560, 42785, 45770, 58904, 63640, 68456, 73186, 73630, 85570, 91540, 146372, 147260, 169349, 171140, 182965, 183080, 196811, 292744, 294520, 316609, 338698, 342280, 365930, 393622, 633218, 677396, 731860, 787244, 846745, 984055, 1266436, 1354792, 1463720, 1574488, 1583045, 1693490, 1968110, 2532872, 3166090, 3386980, 3936220, 6332180, 6773960, 7282007, 7872440, 12664360, 14564014, 29128028, 36410035, 58256056, 72820070, 145640140, 291280280]

約数ペア:

[(1, 291280280), (2, 145640140), (4, 72820070), (5, 58256056), (8, 36410035), (10, 29128028), (20, 14564014), (23, 12664360), (37, 7872440), (40, 7282007), (43, 6773960), (46, 6332180), (74, 3936220), (86, 3386980), (92, 3166090), (115, 2532872), (148, 1968110), (172, 1693490), (184, 1583045), (185, 1574488), (199, 1463720), (215, 1354792), (230, 1266436), (296, 984055), (344, 846745), (370, 787244), (398, 731860), (430, 677396), (460, 633218), (740, 393622), (796, 365930), (851, 342280), (860, 338698), (920, 316609), (989, 294520), (995, 292744), (1480, 196811), (1591, 183080), (1592, 182965), (1702, 171140), (1720, 169349), (1978, 147260), (1990, 146372), (3182, 91540), (3404, 85570), (3956, 73630), (3980, 73186), (4255, 68456), (4577, 63640), (4945, 58904), (6364, 45770), (6808, 42785), (7363, 39560), (7912, 36815), (7955, 36616), (7960, 36593), (8510, 34228), (8557, 34040), (9154, 31820), (9890, 29452), (12728, 22885), (14726, 19780), (15910, 18308), (17020, 17114)]