20187880216

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1\times {\mathrm{16103}}^1$

素因数の和:16544

約数の個数: 64

約数和(自身を含む): 44091463680

約数和(自身を除く): 23903583464

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 367, 427, 488, 734, 854, 1468, 1708, 2569, 2936, 3416, 5138, 10276, 16103, 20552, 22387, 32206, 44774, 64412, 89548, 112721, 128824, 156709, 179096, 225442, 313418, 450884, 626836, 901768, 982283, 1253672, 1964566, 3929132, 5909801, 6875981, 7858264, 11819602, 13751962, 23639204, 27503924, 41368607, 47278408, 55007848, 82737214, 165474428, 330948856, 360497861, 720995722, 1441991444, 2523485027, 2883982888, 5046970054, 10093940108, 20187880216]

約数ペア:

[(1, 20187880216), (2, 10093940108), (4, 5046970054), (7, 2883982888), (8, 2523485027), (14, 1441991444), (28, 720995722), (56, 360497861), (61, 330948856), (122, 165474428), (244, 82737214), (367, 55007848), (427, 47278408), (488, 41368607), (734, 27503924), (854, 23639204), (1468, 13751962), (1708, 11819602), (2569, 7858264), (2936, 6875981), (3416, 5909801), (5138, 3929132), (10276, 1964566), (16103, 1253672), (20552, 982283), (22387, 901768), (32206, 626836), (44774, 450884), (64412, 313418), (89548, 225442), (112721, 179096), (128824, 156709)]