19987828

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{757}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 42787584

約数和(自身を除く): 22799756

約数列:

[1, 2, 4, 7, 14, 23, 28, 41, 46, 82, 92, 161, 164, 287, 322, 574, 644, 757, 943, 1148, 1514, 1886, 3028, 3772, 5299, 6601, 10598, 13202, 17411, 21196, 26404, 31037, 34822, 62074, 69644, 121877, 124148, 217259, 243754, 434518, 487508, 713851, 869036, 1427702, 2855404, 4996957, 9993914, 19987828]

約数ペア:

[(1, 19987828), (2, 9993914), (4, 4996957), (7, 2855404), (14, 1427702), (23, 869036), (28, 713851), (41, 487508), (46, 434518), (82, 243754), (92, 217259), (161, 124148), (164, 121877), (287, 69644), (322, 62074), (574, 34822), (644, 31037), (757, 26404), (943, 21196), (1148, 17411), (1514, 13202), (1886, 10598), (3028, 6601), (3772, 5299)]