780425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:113

約数の個数: 24

約数和(自身を含む): 1071360

約数和(自身を除く): 290935

約数列:

[1, 5, 19, 25, 31, 53, 95, 155, 265, 475, 589, 775, 1007, 1325, 1643, 2945, 5035, 8215, 14725, 25175, 31217, 41075, 156085, 780425]

約数ペア:

[(1, 780425), (5, 156085), (19, 41075), (25, 31217), (31, 25175), (53, 14725), (95, 8215), (155, 5035), (265, 2945), (475, 1643), (589, 1325), (775, 1007)]