21719210

素因数分解:

$2^1\times 5^1\times {\mathrm{739}}^1\times {\mathrm{2939}}^1$

素因数の和:3685

約数の個数: 16

約数和(自身を含む): 39160800

約数和(自身を除く): 17441590

約数列:

[1, 2, 5, 10, 739, 1478, 2939, 3695, 5878, 7390, 14695, 29390, 2171921, 4343842, 10859605, 21719210]

約数ペア:

[(1, 21719210), (2, 10859605), (5, 4343842), (10, 2171921), (739, 29390), (1478, 14695), (2939, 7390), (3695, 5878)]