20686778

素因数分解:

$2^1\times 7^1\times {\mathrm{509}}^1\times {\mathrm{2903}}^1$

素因数の和:3421

約数の個数: 16

約数和(自身を含む): 35544960

約数和(自身を除く): 14858182

約数列:

[1, 2, 7, 14, 509, 1018, 2903, 3563, 5806, 7126, 20321, 40642, 1477627, 2955254, 10343389, 20686778]

約数ペア:

[(1, 20686778), (2, 10343389), (7, 2955254), (14, 1477627), (509, 40642), (1018, 20321), (2903, 7126), (3563, 5806)]