28181769

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6421}}^1$

素因数の和:6461

約数の個数: 32

約数和(自身を含む): 49320960

約数和(自身を除く): 21139191

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 6421, 19263, 44947, 70631, 121999, 134841, 211893, 365997, 494417, 853993, 1341989, 1483251, 2561979, 4025967, 9393923, 28181769]

約数ペア:

[(1, 28181769), (3, 9393923), (7, 4025967), (11, 2561979), (19, 1483251), (21, 1341989), (33, 853993), (57, 494417), (77, 365997), (133, 211893), (209, 134841), (231, 121999), (399, 70631), (627, 44947), (1463, 19263), (4389, 6421)]