78642890

素因数分解:

$2^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{9721}}^1$

素因数の和:10537

約数の個数: 16

約数和(自身を含む): 141746760

約数和(自身を除く): 63103870

約数列:

[1, 2, 5, 10, 809, 1618, 4045, 8090, 9721, 19442, 48605, 97210, 7864289, 15728578, 39321445, 78642890]

約数ペア:

[(1, 78642890), (2, 39321445), (5, 15728578), (10, 7864289), (809, 97210), (1618, 48605), (4045, 19442), (8090, 9721)]