20129972

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{761}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 37444680

約数和(自身を除く): 17314708

約数列:

[1, 2, 4, 17, 34, 68, 389, 761, 778, 1522, 1556, 3044, 6613, 12937, 13226, 25874, 26452, 51748, 296029, 592058, 1184116, 5032493, 10064986, 20129972]

約数ペア:

[(1, 20129972), (2, 10064986), (4, 5032493), (17, 1184116), (34, 592058), (68, 296029), (389, 51748), (761, 26452), (778, 25874), (1522, 13226), (1556, 12937), (3044, 6613)]