12781775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:479

約数の個数: 24

約数和(自身を含む): 16963200

約数和(自身を除く): 4181425

約数列:

[1, 5, 19, 25, 71, 95, 355, 379, 475, 1349, 1775, 1895, 6745, 7201, 9475, 26909, 33725, 36005, 134545, 180025, 511271, 672725, 2556355, 12781775]

約数ペア:

[(1, 12781775), (5, 2556355), (19, 672725), (25, 511271), (71, 180025), (95, 134545), (355, 36005), (379, 33725), (475, 26909), (1349, 9475), (1775, 7201), (1895, 6745)]