21704529

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5527}}^1$

素因数の和:5565

約数の個数: 32

約数和(自身を含む): 38209536

約数和(自身を除く): 16505007

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5527, 16581, 38689, 60797, 93959, 116067, 182391, 281877, 425579, 657713, 1033549, 1276737, 1973139, 3100647, 7234843, 21704529]

約数ペア:

[(1, 21704529), (3, 7234843), (7, 3100647), (11, 1973139), (17, 1276737), (21, 1033549), (33, 657713), (51, 425579), (77, 281877), (119, 182391), (187, 116067), (231, 93959), (357, 60797), (561, 38689), (1309, 16581), (3927, 5527)]