21434679

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 39321600

約数和(自身を除く): 17886921

約数列:

[1, 3, 7, 9, 19, 21, 27, 47, 57, 63, 127, 133, 141, 171, 189, 329, 381, 399, 423, 513, 889, 893, 987, 1143, 1197, 1269, 2413, 2667, 2679, 2961, 3429, 3591, 5969, 6251, 7239, 8001, 8037, 8883, 16891, 17907, 18753, 21717, 24003, 24111, 41783, 50673, 53721, 56259, 65151, 113411, 125349, 152019, 161163, 168777, 340233, 376047, 456057, 793877, 1020699, 1128141, 2381631, 3062097, 7144893, 21434679]

約数ペア:

[(1, 21434679), (3, 7144893), (7, 3062097), (9, 2381631), (19, 1128141), (21, 1020699), (27, 793877), (47, 456057), (57, 376047), (63, 340233), (127, 168777), (133, 161163), (141, 152019), (171, 125349), (189, 113411), (329, 65151), (381, 56259), (399, 53721), (423, 50673), (513, 41783), (889, 24111), (893, 24003), (987, 21717), (1143, 18753), (1197, 17907), (1269, 16891), (2413, 8883), (2667, 8037), (2679, 8001), (2961, 7239), (3429, 6251), (3591, 5969)]