21392917

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12373}}^1$

素因数の和:12412

約数の個数: 16

約数和(自身を含む): 27717760

約数和(自身を除く): 6324843

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12373, 86611, 160849, 235087, 1125943, 1645609, 3056131, 21392917]

約数ペア:

[(1, 21392917), (7, 3056131), (13, 1645609), (19, 1125943), (91, 235087), (133, 160849), (247, 86611), (1729, 12373)]