21335626

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 36062208

約数和(自身を除く): 14726582

約数列:

[1, 2, 13, 26, 31, 62, 103, 206, 257, 403, 514, 806, 1339, 2678, 3193, 3341, 6386, 6682, 7967, 15934, 26471, 41509, 52942, 83018, 103571, 207142, 344123, 688246, 820601, 1641202, 10667813, 21335626]

約数ペア:

[(1, 21335626), (2, 10667813), (13, 1641202), (26, 820601), (31, 688246), (62, 344123), (103, 207142), (206, 103571), (257, 83018), (403, 52942), (514, 41509), (806, 26471), (1339, 15934), (2678, 7967), (3193, 6682), (3341, 6386)]