221782015

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{2693}}^1$

素因数の和:2899

約数の個数: 32

約数和(自身を含む): 329486976

約数和(自身を除く): 107704961

約数列:

[1, 5, 7, 13, 35, 65, 91, 181, 455, 905, 1267, 2353, 2693, 6335, 11765, 13465, 16471, 18851, 35009, 82355, 94255, 175045, 245063, 487433, 1225315, 2437165, 3412031, 6336629, 17060155, 31683145, 44356403, 221782015]

約数ペア:

[(1, 221782015), (5, 44356403), (7, 31683145), (13, 17060155), (35, 6336629), (65, 3412031), (91, 2437165), (181, 1225315), (455, 487433), (905, 245063), (1267, 175045), (2353, 94255), (2693, 82355), (6335, 35009), (11765, 18851), (13465, 16471)]