19995003

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7741}}^1$

素因数の和:7795

約数の個数: 24

約数和(自身を含む): 33817056

約数和(自身を除く): 13822053

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 7741, 23223, 54187, 69669, 162561, 317381, 487683, 952143, 2221667, 2856429, 6665001, 19995003]

約数ペア:

[(1, 19995003), (3, 6665001), (7, 2856429), (9, 2221667), (21, 952143), (41, 487683), (63, 317381), (123, 162561), (287, 69669), (369, 54187), (861, 23223), (2583, 7741)]