81427680

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:191

約数の個数: 240

約数和(自身を含む): 294918624

約数和(自身を除く): 213490944

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 61, 72, 80, 81, 90, 96, 103, 108, 120, 122, 135, 144, 160, 162, 180, 183, 206, 216, 240, 244, 270, 288, 305, 309, 324, 360, 366, 405, 412, 432, 480, 488, 515, 540, 549, 610, 618, 648, 720, 732, 810, 824, 864, 915, 927, 976, 1030, 1080, 1098, 1220, 1236, 1296, 1440, 1464, 1545, 1620, 1647, 1648, 1830, 1854, 1952, 2060, 2160, 2196, 2440, 2472, 2592, 2745, 2781, 2928, 3090, 3240, 3294, 3296, 3660, 3708, 4120, 4320, 4392, 4635, 4880, 4941, 4944, 5490, 5562, 5856, 6180, 6283, 6480, 6588, 7320, 7416, 8235, 8240, 8343, 8784, 9270, 9760, 9882, 9888, 10980, 11124, 12360, 12566, 12960, 13176, 13905, 14640, 14832, 16470, 16480, 16686, 17568, 18540, 18849, 19764, 21960, 22248, 24705, 24720, 25132, 26352, 27810, 29280, 29664, 31415, 32940, 33372, 37080, 37698, 39528, 41715, 43920, 44496, 49410, 49440, 50264, 52704, 55620, 56547, 62830, 65880, 66744, 74160, 75396, 79056, 83430, 87840, 88992, 94245, 98820, 100528, 111240, 113094, 125660, 131760, 133488, 148320, 150792, 158112, 166860, 169641, 188490, 197640, 201056, 222480, 226188, 251320, 263520, 266976, 282735, 301584, 333720, 339282, 376980, 395280, 444960, 452376, 502640, 508923, 565470, 603168, 667440, 678564, 753960, 790560, 848205, 904752, 1005280, 1017846, 1130940, 1334880, 1357128, 1507920, 1696410, 1809504, 2035692, 2261880, 2544615, 2714256, 3015840, 3392820, 4071384, 4523760, 5089230, 5428512, 6785640, 8142768, 9047520, 10178460, 13571280, 16285536, 20356920, 27142560, 40713840, 81427680]

約数ペア:

[(1, 81427680), (2, 40713840), (3, 27142560), (4, 20356920), (5, 16285536), (6, 13571280), (8, 10178460), (9, 9047520), (10, 8142768), (12, 6785640), (15, 5428512), (16, 5089230), (18, 4523760), (20, 4071384), (24, 3392820), (27, 3015840), (30, 2714256), (32, 2544615), (36, 2261880), (40, 2035692), (45, 1809504), (48, 1696410), (54, 1507920), (60, 1357128), (61, 1334880), (72, 1130940), (80, 1017846), (81, 1005280), (90, 904752), (96, 848205), (103, 790560), (108, 753960), (120, 678564), (122, 667440), (135, 603168), (144, 565470), (160, 508923), (162, 502640), (180, 452376), (183, 444960), (206, 395280), (216, 376980), (240, 339282), (244, 333720), (270, 301584), (288, 282735), (305, 266976), (309, 263520), (324, 251320), (360, 226188), (366, 222480), (405, 201056), (412, 197640), (432, 188490), (480, 169641), (488, 166860), (515, 158112), (540, 150792), (549, 148320), (610, 133488), (618, 131760), (648, 125660), (720, 113094), (732, 111240), (810, 100528), (824, 98820), (864, 94245), (915, 88992), (927, 87840), (976, 83430), (1030, 79056), (1080, 75396), (1098, 74160), (1220, 66744), (1236, 65880), (1296, 62830), (1440, 56547), (1464, 55620), (1545, 52704), (1620, 50264), (1647, 49440), (1648, 49410), (1830, 44496), (1854, 43920), (1952, 41715), (2060, 39528), (2160, 37698), (2196, 37080), (2440, 33372), (2472, 32940), (2592, 31415), (2745, 29664), (2781, 29280), (2928, 27810), (3090, 26352), (3240, 25132), (3294, 24720), (3296, 24705), (3660, 22248), (3708, 21960), (4120, 19764), (4320, 18849), (4392, 18540), (4635, 17568), (4880, 16686), (4941, 16480), (4944, 16470), (5490, 14832), (5562, 14640), (5856, 13905), (6180, 13176), (6283, 12960), (6480, 12566), (6588, 12360), (7320, 11124), (7416, 10980), (8235, 9888), (8240, 9882), (8343, 9760), (8784, 9270)]