20479568

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:180

約数の個数: 80

約数和(自身を含む): 45532800

約数和(自身を除く): 25053232

約数列:

[1, 2, 4, 8, 16, 19, 23, 29, 38, 46, 58, 76, 92, 101, 116, 152, 184, 202, 232, 304, 368, 404, 437, 464, 551, 667, 808, 874, 1102, 1334, 1616, 1748, 1919, 2204, 2323, 2668, 2929, 3496, 3838, 4408, 4646, 5336, 5858, 6992, 7676, 8816, 9292, 10672, 11716, 12673, 15352, 18584, 23432, 25346, 30704, 37168, 44137, 46864, 50692, 55651, 67367, 88274, 101384, 111302, 134734, 176548, 202768, 222604, 269468, 353096, 445208, 538936, 706192, 890416, 1077872, 1279973, 2559946, 5119892, 10239784, 20479568]

約数ペア:

[(1, 20479568), (2, 10239784), (4, 5119892), (8, 2559946), (16, 1279973), (19, 1077872), (23, 890416), (29, 706192), (38, 538936), (46, 445208), (58, 353096), (76, 269468), (92, 222604), (101, 202768), (116, 176548), (152, 134734), (184, 111302), (202, 101384), (232, 88274), (304, 67367), (368, 55651), (404, 50692), (437, 46864), (464, 44137), (551, 37168), (667, 30704), (808, 25346), (874, 23432), (1102, 18584), (1334, 15352), (1616, 12673), (1748, 11716), (1919, 10672), (2204, 9292), (2323, 8816), (2668, 7676), (2929, 6992), (3496, 5858), (3838, 5336), (4408, 4646)]