21347557

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 28016640

約数和(自身を除く): 6669083

約数列:

[1, 7, 11, 37, 59, 77, 127, 259, 407, 413, 649, 889, 1397, 2183, 2849, 4543, 4699, 7493, 9779, 15281, 24013, 32893, 51689, 52451, 82423, 168091, 277241, 361823, 576961, 1940687, 3049651, 21347557]

約数ペア:

[(1, 21347557), (7, 3049651), (11, 1940687), (37, 576961), (59, 361823), (77, 277241), (127, 168091), (259, 82423), (407, 52451), (413, 51689), (649, 32893), (889, 24013), (1397, 15281), (2183, 9779), (2849, 7493), (4543, 4699)]