20020122

素因数分解:

$2^1\times 3^4\times {\mathrm{123581}}^1$

素因数の和:123595

約数の個数: 20

約数和(自身を含む): 44860266

約数和(自身を除く): 24840144

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 123581, 247162, 370743, 741486, 1112229, 2224458, 3336687, 6673374, 10010061, 20020122]

約数ペア:

[(1, 20020122), (2, 10010061), (3, 6673374), (6, 3336687), (9, 2224458), (18, 1112229), (27, 741486), (54, 370743), (81, 247162), (162, 123581)]