68406280

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{8681}}^1$

素因数の和:8889

約数の個数: 32

約数和(自身を含む): 154713240

約数和(自身を除く): 86306960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 8681, 17362, 34724, 43405, 69448, 86810, 173620, 347240, 1710157, 3420314, 6840628, 8550785, 13681256, 17101570, 34203140, 68406280]

約数ペア:

[(1, 68406280), (2, 34203140), (4, 17101570), (5, 13681256), (8, 8550785), (10, 6840628), (20, 3420314), (40, 1710157), (197, 347240), (394, 173620), (788, 86810), (985, 69448), (1576, 43405), (1970, 34724), (3940, 17362), (7880, 8681)]