20778554

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{1823}}^1$

素因数の和:2005

約数の個数: 16

約数和(自身を含む): 32175360

約数和(自身を除く): 11396806

約数列:

[1, 2, 41, 82, 139, 278, 1823, 3646, 5699, 11398, 74743, 149486, 253397, 506794, 10389277, 20778554]

約数ペア:

[(1, 20778554), (2, 10389277), (41, 506794), (82, 253397), (139, 149486), (278, 74743), (1823, 11398), (3646, 5699)]