20870025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{617}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 38622528

約数和(自身を除く): 17752503

約数列:

[1, 3, 5, 11, 15, 25, 33, 41, 55, 75, 123, 165, 205, 275, 451, 615, 617, 825, 1025, 1353, 1851, 2255, 3075, 3085, 6765, 6787, 9255, 11275, 15425, 20361, 25297, 33825, 33935, 46275, 75891, 101805, 126485, 169675, 278267, 379455, 509025, 632425, 834801, 1391335, 1897275, 4174005, 6956675, 20870025]

約数ペア:

[(1, 20870025), (3, 6956675), (5, 4174005), (11, 1897275), (15, 1391335), (25, 834801), (33, 632425), (41, 509025), (55, 379455), (75, 278267), (123, 169675), (165, 126485), (205, 101805), (275, 75891), (451, 46275), (615, 33935), (617, 33825), (825, 25297), (1025, 20361), (1353, 15425), (1851, 11275), (2255, 9255), (3075, 6787), (3085, 6765)]