78971890

素因数分解:

$2^1\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{7121}}^1$

素因数の和:8237

約数の個数: 16

約数和(自身を含む): 142297560

約数和(自身を除く): 63325670

約数列:

[1, 2, 5, 10, 1109, 2218, 5545, 7121, 11090, 14242, 35605, 71210, 7897189, 15794378, 39485945, 78971890]

約数ペア:

[(1, 78971890), (2, 39485945), (5, 15794378), (10, 7897189), (1109, 71210), (2218, 35605), (5545, 14242), (7121, 11090)]