21350505

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1559}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 16389015

約数列:

[1, 3, 5, 11, 15, 33, 55, 83, 165, 249, 415, 913, 1245, 1559, 2739, 4565, 4677, 7795, 13695, 17149, 23385, 51447, 85745, 129397, 257235, 388191, 646985, 1423367, 1940955, 4270101, 7116835, 21350505]

約数ペア:

[(1, 21350505), (3, 7116835), (5, 4270101), (11, 1940955), (15, 1423367), (33, 646985), (55, 388191), (83, 257235), (165, 129397), (249, 85745), (415, 51447), (913, 23385), (1245, 17149), (1559, 13695), (2739, 7795), (4565, 4677)]