30042940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21157}}^1$

素因数の和:21237

約数の個数: 24

約数和(自身を含む): 63981792

約数和(自身を除く): 33938852

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 21157, 42314, 84628, 105785, 211570, 423140, 1502147, 3004294, 6008588, 7510735, 15021470, 30042940]

約数ペア:

[(1, 30042940), (2, 15021470), (4, 7510735), (5, 6008588), (10, 3004294), (20, 1502147), (71, 423140), (142, 211570), (284, 105785), (355, 84628), (710, 42314), (1420, 21157)]