21106125

素因数分解:

$3^2\times 5^3\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 38718576

約数和(自身を除く): 17612451

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 125, 219, 225, 257, 365, 375, 657, 771, 1095, 1125, 1285, 1825, 2313, 3285, 3855, 5475, 6425, 9125, 11565, 16425, 18761, 19275, 27375, 32125, 56283, 57825, 82125, 93805, 96375, 168849, 281415, 289125, 469025, 844245, 1407075, 2345125, 4221225, 7035375, 21106125]

約数ペア:

[(1, 21106125), (3, 7035375), (5, 4221225), (9, 2345125), (15, 1407075), (25, 844245), (45, 469025), (73, 289125), (75, 281415), (125, 168849), (219, 96375), (225, 93805), (257, 82125), (365, 57825), (375, 56283), (657, 32125), (771, 27375), (1095, 19275), (1125, 18761), (1285, 16425), (1825, 11565), (2313, 9125), (3285, 6425), (3855, 5475)]