20871284

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10211}}^1$

素因数の和:10295

約数の個数: 24

約数和(自身を含む): 42318528

約数和(自身を除く): 21447244

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10211, 20422, 40844, 71477, 142954, 285908, 745403, 1490806, 2981612, 5217821, 10435642, 20871284]

約数ペア:

[(1, 20871284), (2, 10435642), (4, 5217821), (7, 2981612), (14, 1490806), (28, 745403), (73, 285908), (146, 142954), (292, 71477), (511, 40844), (1022, 20422), (2044, 10211)]