123458890

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{1789}}^1$

素因数の和:1966

約数の個数: 32

約数和(自身を含む): 227859840

約数和(自身を除く): 104400950

約数列:

[1, 2, 5, 10, 67, 103, 134, 206, 335, 515, 670, 1030, 1789, 3578, 6901, 8945, 13802, 17890, 34505, 69010, 119863, 184267, 239726, 368534, 599315, 921335, 1198630, 1842670, 12345889, 24691778, 61729445, 123458890]

約数ペア:

[(1, 123458890), (2, 61729445), (5, 24691778), (10, 12345889), (67, 1842670), (103, 1198630), (134, 921335), (206, 599315), (335, 368534), (515, 239726), (670, 184267), (1030, 119863), (1789, 69010), (3578, 34505), (6901, 17890), (8945, 13802)]