21221954

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{6427}}^1$

素因数の和:6569

約数の個数: 16

約数和(自身を含む): 34556928

約数和(自身を除く): 13334974

約数列:

[1, 2, 13, 26, 127, 254, 1651, 3302, 6427, 12854, 83551, 167102, 816229, 1632458, 10610977, 21221954]

約数ペア:

[(1, 21221954), (2, 10610977), (13, 1632458), (26, 816229), (127, 167102), (254, 83551), (1651, 12854), (3302, 6427)]