21643545

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2677}}^1$

素因数の和:2710

約数の個数: 48

約数和(自身を含む): 43962048

約数和(自身を除く): 22318503

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2677, 2695, 8031, 8085, 13385, 18739, 29447, 40155, 56217, 88341, 93695, 131173, 147235, 206129, 281085, 393519, 441705, 618387, 655865, 1030645, 1442903, 1967595, 3091935, 4328709, 7214515, 21643545]

約数ペア:

[(1, 21643545), (3, 7214515), (5, 4328709), (7, 3091935), (11, 1967595), (15, 1442903), (21, 1030645), (33, 655865), (35, 618387), (49, 441705), (55, 393519), (77, 281085), (105, 206129), (147, 147235), (165, 131173), (231, 93695), (245, 88341), (385, 56217), (539, 40155), (735, 29447), (1155, 18739), (1617, 13385), (2677, 8085), (2695, 8031)]