19730980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22943}}^1$

素因数の和:22995

約数の個数: 24

約数和(自身を含む): 42400512

約数和(自身を除く): 22669532

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 22943, 45886, 91772, 114715, 229430, 458860, 986549, 1973098, 3946196, 4932745, 9865490, 19730980]

約数ペア:

[(1, 19730980), (2, 9865490), (4, 4932745), (5, 3946196), (10, 1973098), (20, 986549), (43, 458860), (86, 229430), (172, 114715), (215, 91772), (430, 45886), (860, 22943)]