21399435

素因数分解:

$3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1549}}^1$

素因数の和:1867

約数の個数: 24

約数和(自身を含む): 37237200

約数和(自身を除く): 15837765

約数列:

[1, 3, 5, 9, 15, 45, 307, 921, 1535, 1549, 2763, 4605, 4647, 7745, 13815, 13941, 23235, 69705, 475543, 1426629, 2377715, 4279887, 7133145, 21399435]

約数ペア:

[(1, 21399435), (3, 7133145), (5, 4279887), (9, 2377715), (15, 1426629), (45, 475543), (307, 69705), (921, 23235), (1535, 13941), (1549, 13815), (2763, 7745), (4605, 4647)]