20117973421

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{70429}}^1$

素因数の和:70565

約数の個数: 32

約数和(自身を含む): 25683848960

約数和(自身を除く): 5565875539

約数列:

[1, 7, 13, 43, 73, 91, 301, 511, 559, 949, 3139, 3913, 6643, 21973, 40807, 70429, 285649, 493003, 915577, 3028447, 5141317, 6409039, 21199129, 35989219, 39369811, 66837121, 221076631, 275588677, 467859847, 1547536417, 2873996203, 20117973421]

約数ペア:

[(1, 20117973421), (7, 2873996203), (13, 1547536417), (43, 467859847), (73, 275588677), (91, 221076631), (301, 66837121), (511, 39369811), (559, 35989219), (949, 21199129), (3139, 6409039), (3913, 5141317), (6643, 3028447), (21973, 915577), (40807, 493003), (70429, 285649)]