19990101

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{2467}}^1$

素因数の和:2580

約数の個数: 16

約数和(自身を含む): 27760064

約数和(自身を除く): 7769963

約数列:

[1, 3, 37, 73, 111, 219, 2467, 2701, 7401, 8103, 91279, 180091, 273837, 540273, 6663367, 19990101]

約数ペア:

[(1, 19990101), (3, 6663367), (37, 540273), (73, 273837), (111, 180091), (219, 91279), (2467, 8103), (2701, 7401)]