18243975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 32810400

約数和(自身を除く): 14566425

約数列:

[1, 3, 5, 15, 17, 25, 41, 51, 75, 85, 123, 205, 255, 349, 425, 615, 697, 1025, 1047, 1275, 1745, 2091, 3075, 3485, 5235, 5933, 8725, 10455, 14309, 17425, 17799, 26175, 29665, 42927, 52275, 71545, 88995, 148325, 214635, 243253, 357725, 444975, 729759, 1073175, 1216265, 3648795, 6081325, 18243975]

約数ペア:

[(1, 18243975), (3, 6081325), (5, 3648795), (15, 1216265), (17, 1073175), (25, 729759), (41, 444975), (51, 357725), (75, 243253), (85, 214635), (123, 148325), (205, 88995), (255, 71545), (349, 52275), (425, 42927), (615, 29665), (697, 26175), (1025, 17799), (1047, 17425), (1275, 14309), (1745, 10455), (2091, 8725), (3075, 5933), (3485, 5235)]