19805090

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19609}}^1$

素因数の和:19717

約数の個数: 16

約数和(自身を含む): 36003960

約数和(自身を除く): 16198870

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 19609, 39218, 98045, 196090, 1980509, 3961018, 9902545, 19805090]

約数ペア:

[(1, 19805090), (2, 9902545), (5, 3961018), (10, 1980509), (101, 196090), (202, 98045), (505, 39218), (1010, 19609)]