21299681921

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{1489}}^1\times {\mathrm{3863}}^1$

素因数の和:5405

約数の個数: 24

約数和(自身を含む): 25470560640

約数和(自身を除く): 4170878719

約数列:

[1, 7, 23, 161, 529, 1489, 3703, 3863, 10423, 27041, 34247, 88849, 239729, 621943, 787681, 2043527, 5513767, 5752007, 14304689, 40264049, 132296161, 926073127, 3042811703, 21299681921]

約数ペア:

[(1, 21299681921), (7, 3042811703), (23, 926073127), (161, 132296161), (529, 40264049), (1489, 14304689), (3703, 5752007), (3863, 5513767), (10423, 2043527), (27041, 787681), (34247, 621943), (88849, 239729)]