21299565

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28979}}^1$

素因数の和:29001

約数の個数: 24

約数和(自身を含む): 39644640

約数和(自身を除く): 18345075

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28979, 86937, 144895, 202853, 434685, 608559, 1014265, 1419971, 3042795, 4259913, 7099855, 21299565]

約数ペア:

[(1, 21299565), (3, 7099855), (5, 4259913), (7, 3042795), (15, 1419971), (21, 1014265), (35, 608559), (49, 434685), (105, 202853), (147, 144895), (245, 86937), (735, 28979)]