394820840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{229547}}^1$

素因数の和:229601

約数の個数: 32

約数和(自身を含む): 909010080

約数和(自身を除く): 514189240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 229547, 459094, 918188, 1147735, 1836376, 2295470, 4590940, 9181880, 9870521, 19741042, 39482084, 49352605, 78964168, 98705210, 197410420, 394820840]

約数ペア:

[(1, 394820840), (2, 197410420), (4, 98705210), (5, 78964168), (8, 49352605), (10, 39482084), (20, 19741042), (40, 9870521), (43, 9181880), (86, 4590940), (172, 2295470), (215, 1836376), (344, 1147735), (430, 918188), (860, 459094), (1720, 229547)]