420778865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{997}}^1$

素因数の和:1209

約数の個数: 32

約数和(自身を含む): 560668416

約数和(自身を除く): 139889551

約数列:

[1, 5, 13, 43, 65, 151, 215, 559, 755, 997, 1963, 2795, 4985, 6493, 9815, 12961, 32465, 42871, 64805, 84409, 150547, 214355, 422045, 557323, 752735, 1957111, 2786615, 6473521, 9785555, 32367605, 84155773, 420778865]

約数ペア:

[(1, 420778865), (5, 84155773), (13, 32367605), (43, 9785555), (65, 6473521), (151, 2786615), (215, 1957111), (559, 752735), (755, 557323), (997, 422045), (1963, 214355), (2795, 150547), (4985, 84409), (6493, 64805), (9815, 42871), (12961, 32465)]