20199893980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{757}}^1\times {\mathrm{8287}}^1$

素因数の和:9083

約数の個数: 96

約数和(自身を含む): 50660499456

約数和(自身を除く): 30460605476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 757, 805, 1514, 1610, 3028, 3220, 3785, 5299, 7570, 8287, 10598, 15140, 16574, 17411, 21196, 26495, 33148, 34822, 41435, 52990, 58009, 69644, 82870, 87055, 105980, 116018, 121877, 165740, 174110, 190601, 232036, 243754, 290045, 348220, 381202, 487508, 580090, 609385, 762404, 953005, 1160180, 1218770, 1334207, 1906010, 2437540, 2668414, 3812020, 5336828, 6273259, 6671035, 12546518, 13342070, 25093036, 26684140, 31366295, 43912813, 62732590, 87825626, 125465180, 144284957, 175651252, 219564065, 288569914, 439128130, 577139828, 721424785, 878256260, 1009994699, 1442849570, 2019989398, 2885699140, 4039978796, 5049973495, 10099946990, 20199893980]

約数ペア:

[(1, 20199893980), (2, 10099946990), (4, 5049973495), (5, 4039978796), (7, 2885699140), (10, 2019989398), (14, 1442849570), (20, 1009994699), (23, 878256260), (28, 721424785), (35, 577139828), (46, 439128130), (70, 288569914), (92, 219564065), (115, 175651252), (140, 144284957), (161, 125465180), (230, 87825626), (322, 62732590), (460, 43912813), (644, 31366295), (757, 26684140), (805, 25093036), (1514, 13342070), (1610, 12546518), (3028, 6671035), (3220, 6273259), (3785, 5336828), (5299, 3812020), (7570, 2668414), (8287, 2437540), (10598, 1906010), (15140, 1334207), (16574, 1218770), (17411, 1160180), (21196, 953005), (26495, 762404), (33148, 609385), (34822, 580090), (41435, 487508), (52990, 381202), (58009, 348220), (69644, 290045), (82870, 243754), (87055, 232036), (105980, 190601), (116018, 174110), (121877, 165740)]