138978385

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{1087}}^1$

素因数の和:1393

約数の個数: 32

約数和(自身を含む): 206180352

約数和(自身を除く): 67201967

約数列:

[1, 5, 7, 13, 35, 65, 91, 281, 455, 1087, 1405, 1967, 3653, 5435, 7609, 9835, 14131, 18265, 25571, 38045, 70655, 98917, 127855, 305447, 494585, 1527235, 2138129, 3970811, 10690645, 19854055, 27795677, 138978385]

約数ペア:

[(1, 138978385), (5, 27795677), (7, 19854055), (13, 10690645), (35, 3970811), (65, 2138129), (91, 1527235), (281, 494585), (455, 305447), (1087, 127855), (1405, 98917), (1967, 70655), (3653, 38045), (5435, 25571), (7609, 18265), (9835, 14131)]