20684860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21107}}^1$

素因数の和:21130

約数の個数: 36

約数和(自身を含む): 50532552

約数和(自身を除く): 29847692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21107, 42214, 84428, 105535, 147749, 211070, 295498, 422140, 590996, 738745, 1034243, 1477490, 2068486, 2954980, 4136972, 5171215, 10342430, 20684860]

約数ペア:

[(1, 20684860), (2, 10342430), (4, 5171215), (5, 4136972), (7, 2954980), (10, 2068486), (14, 1477490), (20, 1034243), (28, 738745), (35, 590996), (49, 422140), (70, 295498), (98, 211070), (140, 147749), (196, 105535), (245, 84428), (490, 42214), (980, 21107)]