21911841

素因数分解:

$3^2\times 7^1\times {\mathrm{283}}^1\times {\mathrm{1229}}^1$

素因数の和:1525

約数の個数: 24

約数和(自身を含む): 36329280

約数和(自身を除く): 14417439

約数列:

[1, 3, 7, 9, 21, 63, 283, 849, 1229, 1981, 2547, 3687, 5943, 8603, 11061, 17829, 25809, 77427, 347807, 1043421, 2434649, 3130263, 7303947, 21911841]

約数ペア:

[(1, 21911841), (3, 7303947), (7, 3130263), (9, 2434649), (21, 1043421), (63, 347807), (283, 77427), (849, 25809), (1229, 17829), (1981, 11061), (2547, 8603), (3687, 5943)]