20161563280

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{122399}}^1$

素因数の和:122512

約数の個数: 80

約数和(自身を含む): 49175424000

約数和(自身を除く): 29013860720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 71, 80, 116, 142, 145, 232, 284, 290, 355, 464, 568, 580, 710, 1136, 1160, 1420, 2059, 2320, 2840, 4118, 5680, 8236, 10295, 16472, 20590, 32944, 41180, 82360, 122399, 164720, 244798, 489596, 611995, 979192, 1223990, 1958384, 2447980, 3549571, 4895960, 7099142, 8690329, 9791920, 14198284, 17380658, 17747855, 28396568, 34761316, 35495710, 43451645, 56793136, 69522632, 70991420, 86903290, 139045264, 141982840, 173806580, 252019541, 283965680, 347613160, 504039082, 695226320, 1008078164, 1260097705, 2016156328, 2520195410, 4032312656, 5040390820, 10080781640, 20161563280]

約数ペア:

[(1, 20161563280), (2, 10080781640), (4, 5040390820), (5, 4032312656), (8, 2520195410), (10, 2016156328), (16, 1260097705), (20, 1008078164), (29, 695226320), (40, 504039082), (58, 347613160), (71, 283965680), (80, 252019541), (116, 173806580), (142, 141982840), (145, 139045264), (232, 86903290), (284, 70991420), (290, 69522632), (355, 56793136), (464, 43451645), (568, 35495710), (580, 34761316), (710, 28396568), (1136, 17747855), (1160, 17380658), (1420, 14198284), (2059, 9791920), (2320, 8690329), (2840, 7099142), (4118, 4895960), (5680, 3549571), (8236, 2447980), (10295, 1958384), (16472, 1223990), (20590, 979192), (32944, 611995), (41180, 489596), (82360, 244798), (122399, 164720)]