27978279

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70121}}^1$

素因数の和:70150

約数の個数: 16

約数和(自身を含む): 44878080

約数和(自身を除く): 16899801

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70121, 210363, 490847, 1332299, 1472541, 3996897, 9326093, 27978279]

約数ペア:

[(1, 27978279), (3, 9326093), (7, 3996897), (19, 1472541), (21, 1332299), (57, 490847), (133, 210363), (399, 70121)]