8720021989

素因数分解:

$7^1\times {\mathrm{461}}^1\times {\mathrm{1621}}^1\times {\mathrm{1667}}^1$

素因数の和:3756

約数の個数: 16

約数和(自身を含む): 9999513216

約数和(自身を除く): 1279491227

約数列:

[1, 7, 461, 1621, 1667, 3227, 11347, 11669, 747281, 768487, 2702207, 5230967, 5379409, 18915449, 1245717427, 8720021989]

約数ペア:

[(1, 8720021989), (7, 1245717427), (461, 18915449), (1621, 5379409), (1667, 5230967), (3227, 2702207), (11347, 768487), (11669, 747281)]