18900940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2417}}^1$

素因数の和:2466

約数の個数: 48

約数和(自身を含む): 43872192

約数和(自身を除く): 24971252

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2417, 3910, 4834, 7820, 9668, 12085, 24170, 41089, 48340, 55591, 82178, 111182, 164356, 205445, 222364, 277955, 410890, 555910, 821780, 945047, 1111820, 1890094, 3780188, 4725235, 9450470, 18900940]

約数ペア:

[(1, 18900940), (2, 9450470), (4, 4725235), (5, 3780188), (10, 1890094), (17, 1111820), (20, 945047), (23, 821780), (34, 555910), (46, 410890), (68, 277955), (85, 222364), (92, 205445), (115, 164356), (170, 111182), (230, 82178), (340, 55591), (391, 48340), (460, 41089), (782, 24170), (1564, 12085), (1955, 9668), (2417, 7820), (3910, 4834)]