28388780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{202777}}^1$

素因数の和:202793

約数の個数: 24

約数和(自身を含む): 68133408

約数和(自身を除く): 39744628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 202777, 405554, 811108, 1013885, 1419439, 2027770, 2838878, 4055540, 5677756, 7097195, 14194390, 28388780]

約数ペア:

[(1, 28388780), (2, 14194390), (4, 7097195), (5, 5677756), (7, 4055540), (10, 2838878), (14, 2027770), (20, 1419439), (28, 1013885), (35, 811108), (70, 405554), (140, 202777)]