21382875

素因数分解:

$3^2\times 5^3\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 39180960

約数和(自身を除く): 17798085

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 83, 125, 225, 229, 249, 375, 415, 687, 747, 1125, 1145, 1245, 2061, 2075, 3435, 3735, 5725, 6225, 10305, 10375, 17175, 18675, 19007, 28625, 31125, 51525, 57021, 85875, 93375, 95035, 171063, 257625, 285105, 475175, 855315, 1425525, 2375875, 4276575, 7127625, 21382875]

約数ペア:

[(1, 21382875), (3, 7127625), (5, 4276575), (9, 2375875), (15, 1425525), (25, 855315), (45, 475175), (75, 285105), (83, 257625), (125, 171063), (225, 95035), (229, 93375), (249, 85875), (375, 57021), (415, 51525), (687, 31125), (747, 28625), (1125, 19007), (1145, 18675), (1245, 17175), (2061, 10375), (2075, 10305), (3435, 6225), (3735, 5725)]