9812840

素因数分解:

$2^3\times 5^1\times {\mathrm{245321}}^1$

素因数の和:245332

約数の個数: 16

約数和(自身を含む): 22078980

約数和(自身を除く): 12266140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 245321, 490642, 981284, 1226605, 1962568, 2453210, 4906420, 9812840]

約数ペア:

[(1, 9812840), (2, 4906420), (4, 2453210), (5, 1962568), (8, 1226605), (10, 981284), (20, 490642), (40, 245321)]