21213255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{202031}}^1$

素因数の和:202046

約数の個数: 16

約数和(自身を含む): 38790144

約数和(自身を除く): 17576889

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 202031, 606093, 1010155, 1414217, 3030465, 4242651, 7071085, 21213255]

約数ペア:

[(1, 21213255), (3, 7071085), (5, 4242651), (7, 3030465), (15, 1414217), (21, 1010155), (35, 606093), (105, 202031)]