20786810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1871}}^1$

素因数の和:1990

約数の個数: 32

約数和(自身を含む): 41243904

約数和(自身を除く): 20457094

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 1871, 2222, 3742, 5555, 9355, 11110, 18710, 20581, 41162, 102905, 188971, 205810, 377942, 944855, 1889710, 2078681, 4157362, 10393405, 20786810]

約数ペア:

[(1, 20786810), (2, 10393405), (5, 4157362), (10, 2078681), (11, 1889710), (22, 944855), (55, 377942), (101, 205810), (110, 188971), (202, 102905), (505, 41162), (1010, 20581), (1111, 18710), (1871, 11110), (2222, 9355), (3742, 5555)]