1991231440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{751}}^1$

素因数の和:929

約数の個数: 160

約数和(自身を含む): 5317373952

約数和(自身を除く): 3326142512

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 131, 176, 184, 220, 230, 253, 262, 368, 440, 460, 506, 524, 655, 751, 880, 920, 1012, 1048, 1265, 1310, 1441, 1502, 1840, 2024, 2096, 2530, 2620, 2882, 3004, 3013, 3755, 4048, 5060, 5240, 5764, 6008, 6026, 7205, 7510, 8261, 10120, 10480, 11528, 12016, 12052, 14410, 15020, 15065, 16522, 17273, 20240, 23056, 24104, 28820, 30040, 30130, 33044, 33143, 34546, 41305, 48208, 57640, 60080, 60260, 66088, 66286, 69092, 82610, 86365, 98381, 115280, 120520, 132176, 132572, 138184, 165220, 165715, 172730, 190003, 196762, 241040, 265144, 276368, 330440, 331430, 345460, 380006, 393524, 491905, 530288, 660880, 662860, 690920, 760012, 787048, 950015, 983810, 1082191, 1325720, 1381840, 1520024, 1574096, 1900030, 1967620, 2164382, 2262763, 2651440, 3040048, 3800060, 3935240, 4328764, 4525526, 5410955, 7600120, 7870480, 8657528, 9051052, 10821910, 11313815, 15200240, 17315056, 18102104, 21643820, 22627630, 24890393, 36204208, 43287640, 45255260, 49780786, 86575280, 90510520, 99561572, 124451965, 181021040, 199123144, 248903930, 398246288, 497807860, 995615720, 1991231440]

約数ペア:

[(1, 1991231440), (2, 995615720), (4, 497807860), (5, 398246288), (8, 248903930), (10, 199123144), (11, 181021040), (16, 124451965), (20, 99561572), (22, 90510520), (23, 86575280), (40, 49780786), (44, 45255260), (46, 43287640), (55, 36204208), (80, 24890393), (88, 22627630), (92, 21643820), (110, 18102104), (115, 17315056), (131, 15200240), (176, 11313815), (184, 10821910), (220, 9051052), (230, 8657528), (253, 7870480), (262, 7600120), (368, 5410955), (440, 4525526), (460, 4328764), (506, 3935240), (524, 3800060), (655, 3040048), (751, 2651440), (880, 2262763), (920, 2164382), (1012, 1967620), (1048, 1900030), (1265, 1574096), (1310, 1520024), (1441, 1381840), (1502, 1325720), (1840, 1082191), (2024, 983810), (2096, 950015), (2530, 787048), (2620, 760012), (2882, 690920), (3004, 662860), (3013, 660880), (3755, 530288), (4048, 491905), (5060, 393524), (5240, 380006), (5764, 345460), (6008, 331430), (6026, 330440), (7205, 276368), (7510, 265144), (8261, 241040), (10120, 196762), (10480, 190003), (11528, 172730), (12016, 165715), (12052, 165220), (14410, 138184), (15020, 132572), (15065, 132176), (16522, 120520), (17273, 115280), (20240, 98381), (23056, 86365), (24104, 82610), (28820, 69092), (30040, 66286), (30130, 66088), (33044, 60260), (33143, 60080), (34546, 57640), (41305, 48208)]