20161120328

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1\times {\mathrm{547}}^1$

素因数の和:1350

約数の個数: 64

約数和(自身を含む): 39132460800

約数和(自身を除く): 18971340472

約数列:

[1, 2, 4, 8, 37, 74, 148, 239, 296, 478, 521, 547, 956, 1042, 1094, 1912, 2084, 2188, 4168, 4376, 8843, 17686, 19277, 20239, 35372, 38554, 40478, 70744, 77108, 80956, 124519, 130733, 154216, 161912, 249038, 261466, 284987, 498076, 522932, 569974, 996152, 1045864, 1139948, 2279896, 4607203, 4837121, 9214406, 9674242, 10544519, 18428812, 19348484, 21089038, 36857624, 38696968, 42178076, 68111893, 84356152, 136223786, 272447572, 544895144, 2520140041, 5040280082, 10080560164, 20161120328]

約数ペア:

[(1, 20161120328), (2, 10080560164), (4, 5040280082), (8, 2520140041), (37, 544895144), (74, 272447572), (148, 136223786), (239, 84356152), (296, 68111893), (478, 42178076), (521, 38696968), (547, 36857624), (956, 21089038), (1042, 19348484), (1094, 18428812), (1912, 10544519), (2084, 9674242), (2188, 9214406), (4168, 4837121), (4376, 4607203), (8843, 2279896), (17686, 1139948), (19277, 1045864), (20239, 996152), (35372, 569974), (38554, 522932), (40478, 498076), (70744, 284987), (77108, 261466), (80956, 249038), (124519, 161912), (130733, 154216)]