20119743

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1061}}^1$

素因数の和:1124

約数の個数: 36

約数和(自身を含む): 34625448

約数和(自身を除く): 14505705

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1061, 2107, 2709, 3183, 6321, 7427, 9549, 18963, 22281, 45623, 51989, 66843, 136869, 155967, 319361, 410607, 467901, 958083, 2235527, 2874249, 6706581, 20119743]

約数ペア:

[(1, 20119743), (3, 6706581), (7, 2874249), (9, 2235527), (21, 958083), (43, 467901), (49, 410607), (63, 319361), (129, 155967), (147, 136869), (301, 66843), (387, 51989), (441, 45623), (903, 22281), (1061, 18963), (2107, 9549), (2709, 7427), (3183, 6321)]