640849

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:200

約数の個数: 16

約数和(自身を含む): 777600

約数和(自身を除く): 136751

約数列:

[1, 11, 17, 23, 149, 187, 253, 391, 1639, 2533, 3427, 4301, 27863, 37697, 58259, 640849]

約数ペア:

[(1, 640849), (11, 58259), (17, 37697), (23, 27863), (149, 4301), (187, 3427), (253, 2533), (391, 1639)]