87989209

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{439}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 116582400

約数和(自身を除く): 28593191

約数列:

[1, 7, 11, 19, 77, 133, 137, 209, 439, 959, 1463, 1507, 2603, 3073, 4829, 8341, 10549, 18221, 28633, 33803, 58387, 60143, 91751, 200431, 421001, 642257, 661573, 1142717, 4631011, 7999019, 12569887, 87989209]

約数ペア:

[(1, 87989209), (7, 12569887), (11, 7999019), (19, 4631011), (77, 1142717), (133, 661573), (137, 642257), (209, 421001), (439, 200431), (959, 91751), (1463, 60143), (1507, 58387), (2603, 33803), (3073, 28633), (4829, 18221), (8341, 10549)]