21275235

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1123}}^1$

素因数の和:1555

約数の個数: 24

約数和(自身を含む): 36997584

約数和(自身を除く): 15722349

約数列:

[1, 3, 5, 9, 15, 45, 421, 1123, 1263, 2105, 3369, 3789, 5615, 6315, 10107, 16845, 18945, 50535, 472783, 1418349, 2363915, 4255047, 7091745, 21275235]

約数ペア:

[(1, 21275235), (3, 7091745), (5, 4255047), (9, 2363915), (15, 1418349), (45, 472783), (421, 50535), (1123, 18945), (1263, 16845), (2105, 10107), (3369, 6315), (3789, 5615)]