21577941

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 19064619

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 97, 99, 107, 189, 231, 291, 297, 321, 679, 693, 749, 873, 963, 1067, 1177, 2037, 2079, 2247, 2619, 2889, 3201, 3531, 6111, 6741, 7469, 8239, 9603, 10379, 10593, 18333, 20223, 22407, 24717, 28809, 31137, 31779, 67221, 72653, 74151, 93411, 114169, 201663, 217959, 222453, 280233, 342507, 653877, 799183, 1027521, 1961631, 2397549, 3082563, 7192647, 21577941]

約数ペア:

[(1, 21577941), (3, 7192647), (7, 3082563), (9, 2397549), (11, 1961631), (21, 1027521), (27, 799183), (33, 653877), (63, 342507), (77, 280233), (97, 222453), (99, 217959), (107, 201663), (189, 114169), (231, 93411), (291, 74151), (297, 72653), (321, 67221), (679, 31779), (693, 31137), (749, 28809), (873, 24717), (963, 22407), (1067, 20223), (1177, 18333), (2037, 10593), (2079, 10379), (2247, 9603), (2619, 8239), (2889, 7469), (3201, 6741), (3531, 6111)]