20011383

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 14583177

約数列:

[1, 3, 7, 9, 21, 43, 63, 83, 89, 129, 249, 267, 301, 387, 581, 623, 747, 801, 903, 1743, 1869, 2709, 3569, 3827, 5229, 5607, 7387, 10707, 11481, 22161, 24983, 26789, 32121, 34443, 51709, 66483, 74949, 80367, 155127, 224847, 241101, 317641, 465381, 952923, 2223487, 2858769, 6670461, 20011383]

約数ペア:

[(1, 20011383), (3, 6670461), (7, 2858769), (9, 2223487), (21, 952923), (43, 465381), (63, 317641), (83, 241101), (89, 224847), (129, 155127), (249, 80367), (267, 74949), (301, 66483), (387, 51709), (581, 34443), (623, 32121), (747, 26789), (801, 24983), (903, 22161), (1743, 11481), (1869, 10707), (2709, 7387), (3569, 5607), (3827, 5229)]