21342531

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{313}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 34725888

約数和(自身を除く): 13383357

約数列:

[1, 3, 7, 17, 21, 51, 119, 191, 313, 357, 573, 939, 1337, 2191, 3247, 4011, 5321, 6573, 9741, 15963, 22729, 37247, 59783, 68187, 111741, 179349, 418481, 1016311, 1255443, 3048933, 7114177, 21342531]

約数ペア:

[(1, 21342531), (3, 7114177), (7, 3048933), (17, 1255443), (21, 1016311), (51, 418481), (119, 179349), (191, 111741), (313, 68187), (357, 59783), (573, 37247), (939, 22729), (1337, 15963), (2191, 9741), (3247, 6573), (4011, 5321)]