21617421

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3187}}^1$

素因数の和:3233

約数の個数: 32

約数和(自身を含む): 36725760

約数和(自身を除く): 15108339

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 3187, 6783, 9561, 22309, 54179, 60553, 66927, 162537, 181659, 379253, 423871, 1029401, 1137759, 1271613, 3088203, 7205807, 21617421]

約数ペア:

[(1, 21617421), (3, 7205807), (7, 3088203), (17, 1271613), (19, 1137759), (21, 1029401), (51, 423871), (57, 379253), (119, 181659), (133, 162537), (323, 66927), (357, 60553), (399, 54179), (969, 22309), (2261, 9561), (3187, 6783)]