27721820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{198013}}^1$

素因数の和:198029

約数の個数: 24

約数和(自身を含む): 66532704

約数和(自身を除く): 38810884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 198013, 396026, 792052, 990065, 1386091, 1980130, 2772182, 3960260, 5544364, 6930455, 13860910, 27721820]

約数ペア:

[(1, 27721820), (2, 13860910), (4, 6930455), (5, 5544364), (7, 3960260), (10, 2772182), (14, 1980130), (20, 1386091), (28, 990065), (35, 792052), (70, 396026), (140, 198013)]