1991131488

素因数分解:

$2^5\times 3^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{2687}}^1$

素因数の和:2817

約数の個数: 144

約数和(自身を含む): 5917556736

約数和(自身を除く): 3926425248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 72, 83, 93, 96, 124, 144, 166, 186, 248, 249, 279, 288, 332, 372, 496, 498, 558, 664, 744, 747, 992, 996, 1116, 1328, 1488, 1494, 1992, 2232, 2573, 2656, 2687, 2976, 2988, 3984, 4464, 5146, 5374, 5976, 7719, 7968, 8061, 8928, 10292, 10748, 11952, 15438, 16122, 20584, 21496, 23157, 23904, 24183, 30876, 32244, 41168, 42992, 46314, 48366, 61752, 64488, 82336, 83297, 85984, 92628, 96732, 123504, 128976, 166594, 185256, 193464, 223021, 247008, 249891, 257952, 333188, 370512, 386928, 446042, 499782, 666376, 669063, 741024, 749673, 773856, 892084, 999564, 1332752, 1338126, 1499346, 1784168, 1999128, 2007189, 2665504, 2676252, 2998692, 3568336, 3998256, 4014378, 5352504, 5997384, 6913651, 7136672, 7996512, 8028756, 10705008, 11994768, 13827302, 16057512, 20740953, 21410016, 23989536, 27654604, 32115024, 41481906, 55309208, 62222859, 64230048, 82963812, 110618416, 124445718, 165927624, 221236832, 248891436, 331855248, 497782872, 663710496, 995565744, 1991131488]

約数ペア:

[(1, 1991131488), (2, 995565744), (3, 663710496), (4, 497782872), (6, 331855248), (8, 248891436), (9, 221236832), (12, 165927624), (16, 124445718), (18, 110618416), (24, 82963812), (31, 64230048), (32, 62222859), (36, 55309208), (48, 41481906), (62, 32115024), (72, 27654604), (83, 23989536), (93, 21410016), (96, 20740953), (124, 16057512), (144, 13827302), (166, 11994768), (186, 10705008), (248, 8028756), (249, 7996512), (279, 7136672), (288, 6913651), (332, 5997384), (372, 5352504), (496, 4014378), (498, 3998256), (558, 3568336), (664, 2998692), (744, 2676252), (747, 2665504), (992, 2007189), (996, 1999128), (1116, 1784168), (1328, 1499346), (1488, 1338126), (1494, 1332752), (1992, 999564), (2232, 892084), (2573, 773856), (2656, 749673), (2687, 741024), (2976, 669063), (2988, 666376), (3984, 499782), (4464, 446042), (5146, 386928), (5374, 370512), (5976, 333188), (7719, 257952), (7968, 249891), (8061, 247008), (8928, 223021), (10292, 193464), (10748, 185256), (11952, 166594), (15438, 128976), (16122, 123504), (20584, 96732), (21496, 92628), (23157, 85984), (23904, 83297), (24183, 82336), (30876, 64488), (32244, 61752), (41168, 48366), (42992, 46314)]