21705406

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1\times {\mathrm{479}}^1$

素因数の和:783

約数の個数: 16

約数和(自身を含む): 33062400

約数和(自身を除く): 11356994

約数列:

[1, 2, 139, 163, 278, 326, 479, 958, 22657, 45314, 66581, 78077, 133162, 156154, 10852703, 21705406]

約数ペア:

[(1, 21705406), (2, 10852703), (139, 156154), (163, 133162), (278, 78077), (326, 66581), (479, 45314), (958, 22657)]