20840504

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{523}}^1$

素因数の和:839

約数の個数: 32

約数和(自身を含む): 41595120

約数和(自身を除く): 20754616

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 293, 523, 586, 1046, 1172, 2092, 2344, 4184, 4981, 8891, 9962, 17782, 19924, 35564, 39848, 71128, 153239, 306478, 612956, 1225912, 2605063, 5210126, 10420252, 20840504]

約数ペア:

[(1, 20840504), (2, 10420252), (4, 5210126), (8, 2605063), (17, 1225912), (34, 612956), (68, 306478), (136, 153239), (293, 71128), (523, 39848), (586, 35564), (1046, 19924), (1172, 17782), (2092, 9962), (2344, 8891), (4184, 4981)]