20178091520

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{5869}}^1$

素因数の和:5988

約数の個数: 160

約数和(自身を含む): 51883286400

約数和(自身を除く): 31705194880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 79, 80, 85, 128, 136, 158, 160, 170, 256, 272, 316, 320, 340, 395, 512, 544, 632, 640, 680, 790, 1088, 1264, 1280, 1343, 1360, 1580, 2176, 2528, 2560, 2686, 2720, 3160, 4352, 5056, 5372, 5440, 5869, 6320, 6715, 8704, 10112, 10744, 10880, 11738, 12640, 13430, 20224, 21488, 21760, 23476, 25280, 26860, 29345, 40448, 42976, 43520, 46952, 50560, 53720, 58690, 85952, 93904, 99773, 101120, 107440, 117380, 171904, 187808, 199546, 202240, 214880, 234760, 343808, 375616, 399092, 429760, 463651, 469520, 498865, 687616, 751232, 798184, 859520, 927302, 939040, 997730, 1502464, 1596368, 1719040, 1854604, 1878080, 1995460, 2318255, 3004928, 3192736, 3438080, 3709208, 3756160, 3990920, 4636510, 6385472, 7418416, 7512320, 7882067, 7981840, 9273020, 12770944, 14836832, 15024640, 15764134, 15963680, 18546040, 25541888, 29673664, 31528268, 31927360, 37092080, 39410335, 51083776, 59347328, 63056536, 63854720, 74184160, 78820670, 118694656, 126113072, 127709440, 148368320, 157641340, 237389312, 252226144, 255418880, 296736640, 315282680, 504452288, 593473280, 630565360, 1008904576, 1186946560, 1261130720, 2017809152, 2522261440, 4035618304, 5044522880, 10089045760, 20178091520]

約数ペア:

[(1, 20178091520), (2, 10089045760), (4, 5044522880), (5, 4035618304), (8, 2522261440), (10, 2017809152), (16, 1261130720), (17, 1186946560), (20, 1008904576), (32, 630565360), (34, 593473280), (40, 504452288), (64, 315282680), (68, 296736640), (79, 255418880), (80, 252226144), (85, 237389312), (128, 157641340), (136, 148368320), (158, 127709440), (160, 126113072), (170, 118694656), (256, 78820670), (272, 74184160), (316, 63854720), (320, 63056536), (340, 59347328), (395, 51083776), (512, 39410335), (544, 37092080), (632, 31927360), (640, 31528268), (680, 29673664), (790, 25541888), (1088, 18546040), (1264, 15963680), (1280, 15764134), (1343, 15024640), (1360, 14836832), (1580, 12770944), (2176, 9273020), (2528, 7981840), (2560, 7882067), (2686, 7512320), (2720, 7418416), (3160, 6385472), (4352, 4636510), (5056, 3990920), (5372, 3756160), (5440, 3709208), (5869, 3438080), (6320, 3192736), (6715, 3004928), (8704, 2318255), (10112, 1995460), (10744, 1878080), (10880, 1854604), (11738, 1719040), (12640, 1596368), (13430, 1502464), (20224, 997730), (21488, 939040), (21760, 927302), (23476, 859520), (25280, 798184), (26860, 751232), (29345, 687616), (40448, 498865), (42976, 469520), (43520, 463651), (46952, 429760), (50560, 399092), (53720, 375616), (58690, 343808), (85952, 234760), (93904, 214880), (99773, 202240), (101120, 199546), (107440, 187808), (117380, 171904)]