21964839

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 11710425

約数列:

[1, 3, 13, 23, 39, 47, 69, 141, 299, 521, 611, 897, 1081, 1563, 1833, 3243, 6773, 11983, 14053, 20319, 24487, 35949, 42159, 73461, 155779, 318331, 467337, 563201, 954993, 1689603, 7321613, 21964839]

約数ペア:

[(1, 21964839), (3, 7321613), (13, 1689603), (23, 954993), (39, 563201), (47, 467337), (69, 318331), (141, 155779), (299, 73461), (521, 42159), (611, 35949), (897, 24487), (1081, 20319), (1563, 14053), (1833, 11983), (3243, 6773)]