19989365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21379}}^1$

素因数の和:21412

約数の個数: 16

約数和(自身を含む): 27708480

約数和(自身を除く): 7719115

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 21379, 106895, 235169, 363443, 1175845, 1817215, 3997873, 19989365]

約数ペア:

[(1, 19989365), (5, 3997873), (11, 1817215), (17, 1175845), (55, 363443), (85, 235169), (187, 106895), (935, 21379)]