20741945

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2731}}^1$

素因数の和:2781

約数の個数: 24

約数和(自身を含む): 29899008

約数和(自身を除く): 9157063

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2731, 7595, 13655, 19117, 84661, 95585, 133819, 423305, 592627, 669095, 2963135, 4148389, 20741945]

約数ペア:

[(1, 20741945), (5, 4148389), (7, 2963135), (31, 669095), (35, 592627), (49, 423305), (155, 133819), (217, 95585), (245, 84661), (1085, 19117), (1519, 13655), (2731, 7595)]