21288680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76031}}^1$

素因数の和:76049

約数の個数: 32

約数和(自身を含む): 54743040

約数和(自身を除く): 33454360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76031, 152062, 304124, 380155, 532217, 608248, 760310, 1064434, 1520620, 2128868, 2661085, 3041240, 4257736, 5322170, 10644340, 21288680]

約数ペア:

[(1, 21288680), (2, 10644340), (4, 5322170), (5, 4257736), (7, 3041240), (8, 2661085), (10, 2128868), (14, 1520620), (20, 1064434), (28, 760310), (35, 608248), (40, 532217), (56, 380155), (70, 304124), (140, 152062), (280, 76031)]