28491519

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 44706816

約数和(自身を除く): 16215297

約数列:

[1, 3, 7, 21, 71, 97, 197, 213, 291, 497, 591, 679, 1379, 1491, 2037, 4137, 6887, 13987, 19109, 20661, 41961, 48209, 57327, 97909, 133763, 144627, 293727, 401289, 1356739, 4070217, 9497173, 28491519]

約数ペア:

[(1, 28491519), (3, 9497173), (7, 4070217), (21, 1356739), (71, 401289), (97, 293727), (197, 144627), (213, 133763), (291, 97909), (497, 57327), (591, 48209), (679, 41961), (1379, 20661), (1491, 19109), (2037, 13987), (4137, 6887)]