81903745

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{30391}}^1$

素因数の和:30421

約数の個数: 24

約数和(自身を含む): 124728768

約数和(自身を除く): 42825023

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 30391, 151955, 212737, 334301, 1063685, 1489159, 1671505, 2340107, 7445795, 11700535, 16380749, 81903745]

約数ペア:

[(1, 81903745), (5, 16380749), (7, 11700535), (11, 7445795), (35, 2340107), (49, 1671505), (55, 1489159), (77, 1063685), (245, 334301), (385, 212737), (539, 151955), (2695, 30391)]