19561311

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^2$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 36506880

約数和(自身を除く): 16945569

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 97, 99, 189, 231, 291, 297, 679, 693, 873, 1067, 2037, 2079, 2619, 3201, 6111, 7469, 9409, 9603, 18333, 22407, 28227, 28809, 65863, 67221, 84681, 103499, 197589, 201663, 254043, 310497, 592767, 724493, 931491, 1778301, 2173479, 2794473, 6520437, 19561311]

約数ペア:

[(1, 19561311), (3, 6520437), (7, 2794473), (9, 2173479), (11, 1778301), (21, 931491), (27, 724493), (33, 592767), (63, 310497), (77, 254043), (97, 201663), (99, 197589), (189, 103499), (231, 84681), (291, 67221), (297, 65863), (679, 28809), (693, 28227), (873, 22407), (1067, 18333), (2037, 9603), (2079, 9409), (2619, 7469), (3201, 6111)]