217464340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{639601}}^1$

素因数の和:639627

約数の個数: 24

約数和(自身を含む): 483539112

約数和(自身を除く): 266074772

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 639601, 1279202, 2558404, 3198005, 6396010, 10873217, 12792020, 21746434, 43492868, 54366085, 108732170, 217464340]

約数ペア:

[(1, 217464340), (2, 108732170), (4, 54366085), (5, 43492868), (10, 21746434), (17, 12792020), (20, 10873217), (34, 6396010), (68, 3198005), (85, 2558404), (170, 1279202), (340, 639601)]