19723825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4219}}^1$

素因数の和:4257

約数の個数: 24

約数和(自身を含む): 28257120

約数和(自身を除く): 8533295

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 425, 935, 4219, 4675, 21095, 46409, 71723, 105475, 232045, 358615, 788953, 1160225, 1793075, 3944765, 19723825]

約数ペア:

[(1, 19723825), (5, 3944765), (11, 1793075), (17, 1160225), (25, 788953), (55, 358615), (85, 232045), (187, 105475), (275, 71723), (425, 46409), (935, 21095), (4219, 4675)]