21711547

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 27498240

約数和(自身を除く): 5786693

約数列:

[1, 11, 13, 19, 61, 131, 143, 209, 247, 671, 793, 1159, 1441, 1703, 2489, 2717, 7991, 8723, 12749, 15067, 18733, 27379, 32357, 87901, 103883, 151829, 165737, 355927, 1142713, 1670119, 1973777, 21711547]

約数ペア:

[(1, 21711547), (11, 1973777), (13, 1670119), (19, 1142713), (61, 355927), (131, 165737), (143, 151829), (209, 103883), (247, 87901), (671, 32357), (793, 27379), (1159, 18733), (1441, 15067), (1703, 12749), (2489, 8723), (2717, 7991)]