19728826

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:310

約数の個数: 32

約数和(自身を含む): 33022080

約数和(自身を除く): 13293254

約数列:

[1, 2, 13, 26, 53, 103, 106, 139, 206, 278, 689, 1339, 1378, 1807, 2678, 3614, 5459, 7367, 10918, 14317, 14734, 28634, 70967, 95771, 141934, 186121, 191542, 372242, 758801, 1517602, 9864413, 19728826]

約数ペア:

[(1, 19728826), (2, 9864413), (13, 1517602), (26, 758801), (53, 372242), (103, 191542), (106, 186121), (139, 141934), (206, 95771), (278, 70967), (689, 28634), (1339, 14734), (1378, 14317), (1807, 10918), (2678, 7367), (3614, 5459)]