393490420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{457547}}^1$

素因数の和:457599

約数の個数: 24

約数和(自身を含む): 845548704

約数和(自身を除く): 452058284

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 457547, 915094, 1830188, 2287735, 4575470, 9150940, 19674521, 39349042, 78698084, 98372605, 196745210, 393490420]

約数ペア:

[(1, 393490420), (2, 196745210), (4, 98372605), (5, 78698084), (10, 39349042), (20, 19674521), (43, 9150940), (86, 4575470), (172, 2287735), (215, 1830188), (430, 915094), (860, 457547)]