21358337

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1123}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 30213120

約数和(自身を除く): 8854783

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1123, 1463, 1729, 2717, 7861, 12353, 14599, 19019, 21337, 86471, 102193, 149359, 160589, 234707, 277381, 1124123, 1642949, 1941667, 3051191, 21358337]

約数ペア:

[(1, 21358337), (7, 3051191), (11, 1941667), (13, 1642949), (19, 1124123), (77, 277381), (91, 234707), (133, 160589), (143, 149359), (209, 102193), (247, 86471), (1001, 21337), (1123, 19019), (1463, 14599), (1729, 12353), (2717, 7861)]