20864109

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52291}}^1$

素因数の和:52320

約数の個数: 16

約数和(自身を含む): 33466880

約数和(自身を除く): 12602771

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52291, 156873, 366037, 993529, 1098111, 2980587, 6954703, 20864109]

約数ペア:

[(1, 20864109), (3, 6954703), (7, 2980587), (19, 1098111), (21, 993529), (57, 366037), (133, 156873), (399, 52291)]