21807555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 22429245

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 79, 105, 165, 231, 237, 239, 385, 395, 553, 717, 869, 1155, 1185, 1195, 1659, 1673, 2607, 2629, 2765, 3585, 4345, 5019, 6083, 7887, 8295, 8365, 13035, 13145, 18249, 18403, 18881, 25095, 30415, 39435, 55209, 56643, 91245, 92015, 94405, 132167, 207691, 276045, 283215, 396501, 623073, 660835, 1038455, 1453837, 1982505, 3115365, 4361511, 7269185, 21807555]

約数ペア:

[(1, 21807555), (3, 7269185), (5, 4361511), (7, 3115365), (11, 1982505), (15, 1453837), (21, 1038455), (33, 660835), (35, 623073), (55, 396501), (77, 283215), (79, 276045), (105, 207691), (165, 132167), (231, 94405), (237, 92015), (239, 91245), (385, 56643), (395, 55209), (553, 39435), (717, 30415), (869, 25095), (1155, 18881), (1185, 18403), (1195, 18249), (1659, 13145), (1673, 13035), (2607, 8365), (2629, 8295), (2765, 7887), (3585, 6083), (4345, 5019)]