209913890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1\times {\mathrm{2671}}^1$

素因数の和:2978

約数の個数: 32

約数和(自身を含む): 392463360

約数和(自身を除く): 182549470

約数列:

[1, 2, 5, 10, 29, 58, 145, 271, 290, 542, 1355, 2671, 2710, 5342, 7859, 13355, 15718, 26710, 39295, 77459, 78590, 154918, 387295, 723841, 774590, 1447682, 3619205, 7238410, 20991389, 41982778, 104956945, 209913890]

約数ペア:

[(1, 209913890), (2, 104956945), (5, 41982778), (10, 20991389), (29, 7238410), (58, 3619205), (145, 1447682), (271, 774590), (290, 723841), (542, 387295), (1355, 154918), (2671, 78590), (2710, 77459), (5342, 39295), (7859, 26710), (13355, 15718)]