21254548

素因数分解:

$2^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{4657}}^1$

素因数の和:4831

約数の個数: 24

約数和(自身を含む): 42779072

約数和(自身を除く): 21524524

約数列:

[1, 2, 4, 7, 14, 28, 163, 326, 652, 1141, 2282, 4564, 4657, 9314, 18628, 32599, 65198, 130396, 759091, 1518182, 3036364, 5313637, 10627274, 21254548]

約数ペア:

[(1, 21254548), (2, 10627274), (4, 5313637), (7, 3036364), (14, 1518182), (28, 759091), (163, 130396), (326, 65198), (652, 32599), (1141, 18628), (2282, 9314), (4564, 4657)]