20640149856

素因数分解:

$2^5\times 3^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{27281}}^1$

素因数の和:27405

約数の個数: 144

約数和(自身を含む): 61133069088

約数和(自身を除く): 40492919232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 37, 48, 71, 72, 74, 96, 111, 142, 144, 148, 213, 222, 284, 288, 296, 333, 426, 444, 568, 592, 639, 666, 852, 888, 1136, 1184, 1278, 1332, 1704, 1776, 2272, 2556, 2627, 2664, 3408, 3552, 5112, 5254, 5328, 6816, 7881, 10224, 10508, 10656, 15762, 20448, 21016, 23643, 27281, 31524, 42032, 47286, 54562, 63048, 81843, 84064, 94572, 109124, 126096, 163686, 189144, 218248, 245529, 252192, 327372, 378288, 436496, 491058, 654744, 756576, 872992, 982116, 1009397, 1309488, 1936951, 1964232, 2018794, 2618976, 3028191, 3873902, 3928464, 4037588, 5810853, 6056382, 7747804, 7856928, 8075176, 9084573, 11621706, 12112764, 15495608, 16150352, 17432559, 18169146, 23243412, 24225528, 30991216, 32300704, 34865118, 36338292, 46486824, 48451056, 61982432, 69730236, 71667187, 72676584, 92973648, 96902112, 139460472, 143334374, 145353168, 185947296, 215001561, 278920944, 286668748, 290706336, 430003122, 557841888, 573337496, 645004683, 860006244, 1146674992, 1290009366, 1720012488, 2293349984, 2580018732, 3440024976, 5160037464, 6880049952, 10320074928, 20640149856]

約数ペア:

[(1, 20640149856), (2, 10320074928), (3, 6880049952), (4, 5160037464), (6, 3440024976), (8, 2580018732), (9, 2293349984), (12, 1720012488), (16, 1290009366), (18, 1146674992), (24, 860006244), (32, 645004683), (36, 573337496), (37, 557841888), (48, 430003122), (71, 290706336), (72, 286668748), (74, 278920944), (96, 215001561), (111, 185947296), (142, 145353168), (144, 143334374), (148, 139460472), (213, 96902112), (222, 92973648), (284, 72676584), (288, 71667187), (296, 69730236), (333, 61982432), (426, 48451056), (444, 46486824), (568, 36338292), (592, 34865118), (639, 32300704), (666, 30991216), (852, 24225528), (888, 23243412), (1136, 18169146), (1184, 17432559), (1278, 16150352), (1332, 15495608), (1704, 12112764), (1776, 11621706), (2272, 9084573), (2556, 8075176), (2627, 7856928), (2664, 7747804), (3408, 6056382), (3552, 5810853), (5112, 4037588), (5254, 3928464), (5328, 3873902), (6816, 3028191), (7881, 2618976), (10224, 2018794), (10508, 1964232), (10656, 1936951), (15762, 1309488), (20448, 1009397), (21016, 982116), (23643, 872992), (27281, 756576), (31524, 654744), (42032, 491058), (47286, 436496), (54562, 378288), (63048, 327372), (81843, 252192), (84064, 245529), (94572, 218248), (109124, 189144), (126096, 163686)]