20850417

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2381}}^1$

素因数の和:2533

約数の個数: 24

約数和(自身を含む): 34681920

約数和(自身を除く): 13831503

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2381, 2919, 7143, 8757, 16667, 21429, 50001, 150003, 330959, 992877, 2316713, 2978631, 6950139, 20850417]

約数ペア:

[(1, 20850417), (3, 6950139), (7, 2978631), (9, 2316713), (21, 992877), (63, 330959), (139, 150003), (417, 50001), (973, 21429), (1251, 16667), (2381, 8757), (2919, 7143)]