21787353

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6781}}^1$

素因数の和:6814

約数の個数: 32

約数和(自身を含む): 39064320

約数和(自身を除く): 17276967

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6781, 20343, 47467, 61029, 115277, 142401, 183087, 345831, 427203, 806939, 1037493, 1281609, 2420817, 3112479, 7262451, 21787353]

約数ペア:

[(1, 21787353), (3, 7262451), (7, 3112479), (9, 2420817), (17, 1281609), (21, 1037493), (27, 806939), (51, 427203), (63, 345831), (119, 183087), (153, 142401), (189, 115277), (357, 61029), (459, 47467), (1071, 20343), (3213, 6781)]