21088249

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 27498240

約数和(自身を除く): 6409991

約数列:

[1, 7, 13, 29, 61, 91, 131, 203, 377, 427, 793, 917, 1703, 1769, 2639, 3799, 5551, 7991, 11921, 12383, 22997, 26593, 49387, 55937, 103883, 160979, 231739, 345709, 727181, 1622173, 3012607, 21088249]

約数ペア:

[(1, 21088249), (7, 3012607), (13, 1622173), (29, 727181), (61, 345709), (91, 231739), (131, 160979), (203, 103883), (377, 55937), (427, 49387), (793, 26593), (917, 22997), (1703, 12383), (1769, 11921), (2639, 7991), (3799, 5551)]