21301695

素因数分解:

$3^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1249}}^1$

素因数の和:1639

約数の個数: 24

約数和(自身を含む): 37050000

約数和(自身を除く): 15748305

約数列:

[1, 3, 5, 9, 15, 45, 379, 1137, 1249, 1895, 3411, 3747, 5685, 6245, 11241, 17055, 18735, 56205, 473371, 1420113, 2366855, 4260339, 7100565, 21301695]

約数ペア:

[(1, 21301695), (3, 7100565), (5, 4260339), (9, 2366855), (15, 1420113), (45, 473371), (379, 56205), (1137, 18735), (1249, 17055), (1895, 11241), (3411, 6245), (3747, 5685)]