20889245

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 27669600

約数和(自身を除く): 6780355

約数列:

[1, 5, 13, 59, 65, 169, 295, 419, 767, 845, 2095, 3835, 5447, 9971, 24721, 27235, 49855, 70811, 123605, 321373, 354055, 1606865, 4177849, 20889245]

約数ペア:

[(1, 20889245), (5, 4177849), (13, 1606865), (59, 354055), (65, 321373), (169, 123605), (295, 70811), (419, 49855), (767, 27235), (845, 24721), (2095, 9971), (3835, 5447)]