640899792

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{487}}^1$

素因数の和:570

約数の個数: 240

約数和(自身を含む): 2092504960

約数和(自身を除く): 1451605168

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 36, 37, 38, 39, 48, 52, 57, 72, 74, 76, 78, 104, 111, 114, 117, 144, 148, 152, 156, 171, 208, 222, 228, 234, 247, 296, 304, 312, 333, 342, 444, 456, 468, 481, 487, 494, 592, 624, 666, 684, 703, 741, 888, 912, 936, 962, 974, 988, 1332, 1368, 1406, 1443, 1461, 1482, 1776, 1872, 1924, 1948, 1976, 2109, 2223, 2664, 2736, 2812, 2886, 2922, 2964, 3848, 3896, 3952, 4218, 4329, 4383, 4446, 5328, 5624, 5772, 5844, 5928, 6327, 6331, 7696, 7792, 8436, 8658, 8766, 8892, 9139, 9253, 11248, 11544, 11688, 11856, 12654, 12662, 16872, 17316, 17532, 17784, 18019, 18278, 18506, 18993, 23088, 23376, 25308, 25324, 27417, 27759, 33744, 34632, 35064, 35568, 36038, 36556, 37012, 37986, 50616, 50648, 54057, 54834, 55518, 56979, 69264, 70128, 72076, 73112, 74024, 75972, 82251, 83277, 101232, 101296, 108114, 109668, 111036, 113958, 120289, 144152, 146224, 148048, 151944, 162171, 164502, 166554, 216228, 219336, 222072, 227916, 234247, 240578, 288304, 303888, 324342, 329004, 333108, 342361, 360867, 432456, 438672, 444144, 455832, 468494, 481156, 648684, 658008, 666216, 684722, 702741, 721734, 864912, 911664, 936988, 962312, 1027083, 1082601, 1297368, 1316016, 1332432, 1369444, 1405482, 1443468, 1873976, 1924624, 2054166, 2108223, 2165202, 2594736, 2738888, 2810964, 2886936, 3081249, 3747952, 4108332, 4216446, 4330404, 4450693, 5477776, 5621928, 5773872, 6162498, 8216664, 8432892, 8660808, 8901386, 11243856, 12324996, 13352079, 16433328, 16865784, 17321616, 17802772, 24649992, 26704158, 33731568, 35605544, 40056237, 49299984, 53408316, 71211088, 80112474, 106816632, 160224948, 213633264, 320449896, 640899792]

約数ペア:

[(1, 640899792), (2, 320449896), (3, 213633264), (4, 160224948), (6, 106816632), (8, 80112474), (9, 71211088), (12, 53408316), (13, 49299984), (16, 40056237), (18, 35605544), (19, 33731568), (24, 26704158), (26, 24649992), (36, 17802772), (37, 17321616), (38, 16865784), (39, 16433328), (48, 13352079), (52, 12324996), (57, 11243856), (72, 8901386), (74, 8660808), (76, 8432892), (78, 8216664), (104, 6162498), (111, 5773872), (114, 5621928), (117, 5477776), (144, 4450693), (148, 4330404), (152, 4216446), (156, 4108332), (171, 3747952), (208, 3081249), (222, 2886936), (228, 2810964), (234, 2738888), (247, 2594736), (296, 2165202), (304, 2108223), (312, 2054166), (333, 1924624), (342, 1873976), (444, 1443468), (456, 1405482), (468, 1369444), (481, 1332432), (487, 1316016), (494, 1297368), (592, 1082601), (624, 1027083), (666, 962312), (684, 936988), (703, 911664), (741, 864912), (888, 721734), (912, 702741), (936, 684722), (962, 666216), (974, 658008), (988, 648684), (1332, 481156), (1368, 468494), (1406, 455832), (1443, 444144), (1461, 438672), (1482, 432456), (1776, 360867), (1872, 342361), (1924, 333108), (1948, 329004), (1976, 324342), (2109, 303888), (2223, 288304), (2664, 240578), (2736, 234247), (2812, 227916), (2886, 222072), (2922, 219336), (2964, 216228), (3848, 166554), (3896, 164502), (3952, 162171), (4218, 151944), (4329, 148048), (4383, 146224), (4446, 144152), (5328, 120289), (5624, 113958), (5772, 111036), (5844, 109668), (5928, 108114), (6327, 101296), (6331, 101232), (7696, 83277), (7792, 82251), (8436, 75972), (8658, 74024), (8766, 73112), (8892, 72076), (9139, 70128), (9253, 69264), (11248, 56979), (11544, 55518), (11688, 54834), (11856, 54057), (12654, 50648), (12662, 50616), (16872, 37986), (17316, 37012), (17532, 36556), (17784, 36038), (18019, 35568), (18278, 35064), (18506, 34632), (18993, 33744), (23088, 27759), (23376, 27417), (25308, 25324)]