21083377

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 26121960

約数和(自身を除く): 5038583

約数列:

[1, 7, 29, 37, 49, 203, 259, 401, 1073, 1421, 1813, 2807, 7511, 11629, 14837, 19649, 52577, 81403, 103859, 430273, 569821, 727013, 3011911, 21083377]

約数ペア:

[(1, 21083377), (7, 3011911), (29, 727013), (37, 569821), (49, 430273), (203, 103859), (259, 81403), (401, 52577), (1073, 19649), (1421, 14837), (1813, 11629), (2807, 7511)]