219906820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1570763}}^1$

素因数の和:1570779

約数の個数: 24

約数和(自身を含む): 527776704

約数和(自身を除く): 307869884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1570763, 3141526, 6283052, 7853815, 10995341, 15707630, 21990682, 31415260, 43981364, 54976705, 109953410, 219906820]

約数ペア:

[(1, 219906820), (2, 109953410), (4, 54976705), (5, 43981364), (7, 31415260), (10, 21990682), (14, 15707630), (20, 10995341), (28, 7853815), (35, 6283052), (70, 3141526), (140, 1570763)]