20572503

素因数分解:

$3^1\times 7^2\times {\mathrm{349}}^1\times {\mathrm{401}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 32079600

約数和(自身を除く): 11507097

約数列:

[1, 3, 7, 21, 49, 147, 349, 401, 1047, 1203, 2443, 2807, 7329, 8421, 17101, 19649, 51303, 58947, 139949, 419847, 979643, 2938929, 6857501, 20572503]

約数ペア:

[(1, 20572503), (3, 6857501), (7, 2938929), (21, 979643), (49, 419847), (147, 139949), (349, 58947), (401, 51303), (1047, 19649), (1203, 17101), (2443, 8421), (2807, 7329)]