21717381

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 35389440

約数和(自身を除く): 13672059

約数列:

[1, 3, 7, 17, 21, 51, 119, 127, 357, 381, 479, 889, 1437, 2159, 2667, 3353, 6477, 8143, 10059, 15113, 24429, 45339, 57001, 60833, 171003, 182499, 425831, 1034161, 1277493, 3102483, 7239127, 21717381]

約数ペア:

[(1, 21717381), (3, 7239127), (7, 3102483), (17, 1277493), (21, 1034161), (51, 425831), (119, 182499), (127, 171003), (357, 60833), (381, 57001), (479, 45339), (889, 24429), (1437, 15113), (2159, 10059), (2667, 8143), (3353, 6477)]