68891180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{24781}}^1$

素因数の和:24929

約数の個数: 24

約数和(自身を含む): 145718160

約数和(自身を除く): 76826980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 24781, 49562, 99124, 123905, 247810, 495620, 3444559, 6889118, 13778236, 17222795, 34445590, 68891180]

約数ペア:

[(1, 68891180), (2, 34445590), (4, 17222795), (5, 13778236), (10, 6889118), (20, 3444559), (139, 495620), (278, 247810), (556, 123905), (695, 99124), (1390, 49562), (2780, 24781)]