21247370

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:410

約数の個数: 32

約数和(自身を含む): 39180240

約数和(自身を除く): 17932870

約数列:

[1, 2, 5, 10, 101, 109, 193, 202, 218, 386, 505, 545, 965, 1010, 1090, 1930, 11009, 19493, 21037, 22018, 38986, 42074, 55045, 97465, 105185, 110090, 194930, 210370, 2124737, 4249474, 10623685, 21247370]

約数ペア:

[(1, 21247370), (2, 10623685), (5, 4249474), (10, 2124737), (101, 210370), (109, 194930), (193, 110090), (202, 105185), (218, 97465), (386, 55045), (505, 42074), (545, 38986), (965, 22018), (1010, 21037), (1090, 19493), (1930, 11009)]