20721109210

素因数分解:

$2^1\times 5^1\times {\mathrm{739}}^1\times {\mathrm{2803939}}^1$

素因数の和:2804685

約数の個数: 16

約数和(自身を含む): 37348480800

約数和(自身を除く): 16627371590

約数列:

[1, 2, 5, 10, 739, 1478, 3695, 7390, 2803939, 5607878, 14019695, 28039390, 2072110921, 4144221842, 10360554605, 20721109210]

約数ペア:

[(1, 20721109210), (2, 10360554605), (5, 4144221842), (10, 2072110921), (739, 28039390), (1478, 14019695), (3695, 5607878), (7390, 2803939)]