20113569

素因数分解:

$3^3\times 7^2\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:707

約数の個数: 48

約数和(自身を含む): 36224640

約数和(自身を除く): 16111071

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 147, 161, 189, 207, 441, 483, 621, 661, 1127, 1323, 1449, 1983, 3381, 4347, 4627, 5949, 10143, 13881, 15203, 17847, 30429, 32389, 41643, 45609, 97167, 106421, 124929, 136827, 291501, 319263, 410481, 744947, 874503, 957789, 2234841, 2873367, 6704523, 20113569]

約数ペア:

[(1, 20113569), (3, 6704523), (7, 2873367), (9, 2234841), (21, 957789), (23, 874503), (27, 744947), (49, 410481), (63, 319263), (69, 291501), (147, 136827), (161, 124929), (189, 106421), (207, 97167), (441, 45609), (483, 41643), (621, 32389), (661, 30429), (1127, 17847), (1323, 15203), (1449, 13881), (1983, 10143), (3381, 5949), (4347, 4627)]