28321419

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70981}}^1$

素因数の和:71010

約数の個数: 16

約数和(自身を含む): 45428480

約数和(自身を除く): 17107061

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70981, 212943, 496867, 1348639, 1490601, 4045917, 9440473, 28321419]

約数ペア:

[(1, 28321419), (3, 9440473), (7, 4045917), (19, 1490601), (21, 1348639), (57, 496867), (133, 212943), (399, 70981)]