86781220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{42961}}^1$

素因数の和:43071

約数の個数: 24

約数和(自身を含む): 184049208

約数和(自身を除く): 97267988

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 42961, 85922, 171844, 214805, 429610, 859220, 4339061, 8678122, 17356244, 21695305, 43390610, 86781220]

約数ペア:

[(1, 86781220), (2, 43390610), (4, 21695305), (5, 17356244), (10, 8678122), (20, 4339061), (101, 859220), (202, 429610), (404, 214805), (505, 171844), (1010, 85922), (2020, 42961)]