21376103

素因数分解:

$7^4\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:364

約数の個数: 20

約数和(自身を含む): 25881240

約数和(自身を除く): 4505137

約数列:

[1, 7, 29, 49, 203, 307, 343, 1421, 2149, 2401, 8903, 9947, 15043, 62321, 69629, 105301, 436247, 737107, 3053729, 21376103]

約数ペア:

[(1, 21376103), (7, 3053729), (29, 737107), (49, 436247), (203, 105301), (307, 69629), (343, 62321), (1421, 15043), (2149, 9947), (2401, 8903)]