78855890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{415031}}^1$

素因数の和:415057

約数の個数: 16

約数和(自身を含む): 149411520

約数和(自身を除く): 70555630

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 415031, 830062, 2075155, 4150310, 7885589, 15771178, 39427945, 78855890]

約数ペア:

[(1, 78855890), (2, 39427945), (5, 15771178), (10, 7885589), (19, 4150310), (38, 2075155), (95, 830062), (190, 415031)]