20910978

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{9601}}^1$

素因数の和:9631

約数の個数: 36

約数和(自身を含む): 49805574

約数和(自身を除く): 28894596

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 198, 242, 363, 726, 1089, 2178, 9601, 19202, 28803, 57606, 86409, 105611, 172818, 211222, 316833, 633666, 950499, 1161721, 1900998, 2323442, 3485163, 6970326, 10455489, 20910978]

約数ペア:

[(1, 20910978), (2, 10455489), (3, 6970326), (6, 3485163), (9, 2323442), (11, 1900998), (18, 1161721), (22, 950499), (33, 633666), (66, 316833), (99, 211222), (121, 172818), (198, 105611), (242, 86409), (363, 57606), (726, 28803), (1089, 19202), (2178, 9601)]