21690284

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70423}}^1$

素因数の和:70445

約数の個数: 24

約数和(自身を含む): 47324928

約数和(自身を除く): 25634644

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 70423, 140846, 281692, 492961, 774653, 985922, 1549306, 1971844, 3098612, 5422571, 10845142, 21690284]

約数ペア:

[(1, 21690284), (2, 10845142), (4, 5422571), (7, 3098612), (11, 1971844), (14, 1549306), (22, 985922), (28, 774653), (44, 492961), (77, 281692), (154, 140846), (308, 70423)]