28778785

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 41236992

約数和(自身を除く): 12458207

約数列:

[1, 5, 7, 35, 37, 71, 185, 259, 313, 355, 497, 1295, 1565, 2191, 2485, 2627, 10955, 11581, 13135, 18389, 22223, 57905, 81067, 91945, 111115, 155561, 405335, 777805, 822251, 4111255, 5755757, 28778785]

約数ペア:

[(1, 28778785), (5, 5755757), (7, 4111255), (35, 822251), (37, 777805), (71, 405335), (185, 155561), (259, 111115), (313, 91945), (355, 81067), (497, 57905), (1295, 22223), (1565, 18389), (2191, 13135), (2485, 11581), (2627, 10955)]