221547417

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47737}}^1$

素因数の和:47777

約数の個数: 32

約数和(自身を含む): 384959232

約数和(自身を除く): 163411815

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 47737, 143211, 334159, 620581, 811529, 1002477, 1861743, 2434587, 4344067, 5680703, 10549877, 13032201, 17042109, 31649631, 73849139, 221547417]

約数ペア:

[(1, 221547417), (3, 73849139), (7, 31649631), (13, 17042109), (17, 13032201), (21, 10549877), (39, 5680703), (51, 4344067), (91, 2434587), (119, 1861743), (221, 1002477), (273, 811529), (357, 620581), (663, 334159), (1547, 143211), (4641, 47737)]