128980299

素因数分解:

$3^1\times 7^2\times {\mathrm{491}}^1\times {\mathrm{1787}}^1$

素因数の和:2295

約数の個数: 24

約数和(自身を含む): 200570688

約数和(自身を除く): 71590389

約数列:

[1, 3, 7, 21, 49, 147, 491, 1473, 1787, 3437, 5361, 10311, 12509, 24059, 37527, 72177, 87563, 262689, 877417, 2632251, 6141919, 18425757, 42993433, 128980299]

約数ペア:

[(1, 128980299), (3, 42993433), (7, 18425757), (21, 6141919), (49, 2632251), (147, 877417), (491, 262689), (1473, 87563), (1787, 72177), (3437, 37527), (5361, 24059), (10311, 12509)]