80374990

素因数分解:

$2^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{12539}}^1$

素因数の和:13187

約数の個数: 16

約数和(自身を含む): 144912240

約数和(自身を除く): 64537250

約数列:

[1, 2, 5, 10, 641, 1282, 3205, 6410, 12539, 25078, 62695, 125390, 8037499, 16074998, 40187495, 80374990]

約数ペア:

[(1, 80374990), (2, 40187495), (5, 16074998), (10, 8037499), (641, 125390), (1282, 62695), (3205, 25078), (6410, 12539)]