16939881

素因数分解:

$3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1907}}^1$

素因数の和:1970

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 12366999

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 141, 189, 329, 423, 987, 1269, 1907, 2961, 5721, 8883, 13349, 17163, 40047, 51489, 89629, 120141, 268887, 360423, 627403, 806661, 1882209, 2419983, 5646627, 16939881]

約数ペア:

[(1, 16939881), (3, 5646627), (7, 2419983), (9, 1882209), (21, 806661), (27, 627403), (47, 360423), (63, 268887), (141, 120141), (189, 89629), (329, 51489), (423, 40047), (987, 17163), (1269, 13349), (1907, 8883), (2961, 5721)]