21690452

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{24989}}^1$

素因数の和:25031

約数の個数: 24

約数和(自身を含む): 44782080

約数和(自身を除く): 23091628

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 24989, 49978, 99956, 174923, 349846, 699692, 774659, 1549318, 3098636, 5422613, 10845226, 21690452]

約数ペア:

[(1, 21690452), (2, 10845226), (4, 5422613), (7, 3098636), (14, 1549318), (28, 774659), (31, 699692), (62, 349846), (124, 174923), (217, 99956), (434, 49978), (868, 24989)]