20218995944

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1\times {\mathrm{367}}^1$

素因数の和:727

約数の個数: 128

約数和(自身を含む): 45047439360

約数和(自身を除く): 24828443416

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 137, 167, 172, 274, 301, 334, 344, 367, 548, 602, 668, 734, 959, 1096, 1169, 1204, 1336, 1468, 1918, 2338, 2408, 2569, 2936, 3836, 4676, 5138, 5891, 7181, 7672, 9352, 10276, 11782, 14362, 15781, 20552, 22879, 23564, 28724, 31562, 41237, 45758, 47128, 50267, 50279, 57448, 61289, 63124, 82474, 91516, 100534, 100558, 110467, 122578, 126248, 160153, 164948, 183032, 201068, 201116, 220934, 245156, 320306, 329896, 351953, 402136, 402232, 429023, 441868, 490312, 640612, 703906, 858046, 883736, 983797, 1281224, 1407812, 1716092, 1967594, 2161997, 2635427, 2815624, 3432184, 3935188, 4323994, 5270854, 6886579, 7870376, 8396593, 8647988, 10541708, 13773158, 15133979, 16793186, 17295976, 18447989, 21083416, 27546316, 30267958, 33586372, 36895978, 55092632, 58776151, 60535916, 67172744, 73791956, 117552302, 121071832, 147583912, 235104604, 361053499, 470209208, 722106998, 1444213996, 2527374493, 2888427992, 5054748986, 10109497972, 20218995944]

約数ペア:

[(1, 20218995944), (2, 10109497972), (4, 5054748986), (7, 2888427992), (8, 2527374493), (14, 1444213996), (28, 722106998), (43, 470209208), (56, 361053499), (86, 235104604), (137, 147583912), (167, 121071832), (172, 117552302), (274, 73791956), (301, 67172744), (334, 60535916), (344, 58776151), (367, 55092632), (548, 36895978), (602, 33586372), (668, 30267958), (734, 27546316), (959, 21083416), (1096, 18447989), (1169, 17295976), (1204, 16793186), (1336, 15133979), (1468, 13773158), (1918, 10541708), (2338, 8647988), (2408, 8396593), (2569, 7870376), (2936, 6886579), (3836, 5270854), (4676, 4323994), (5138, 3935188), (5891, 3432184), (7181, 2815624), (7672, 2635427), (9352, 2161997), (10276, 1967594), (11782, 1716092), (14362, 1407812), (15781, 1281224), (20552, 983797), (22879, 883736), (23564, 858046), (28724, 703906), (31562, 640612), (41237, 490312), (45758, 441868), (47128, 429023), (50267, 402232), (50279, 402136), (57448, 351953), (61289, 329896), (63124, 320306), (82474, 245156), (91516, 220934), (100534, 201116), (100558, 201068), (110467, 183032), (122578, 164948), (126248, 160153)]