21297164

素因数分解:

$2^2\times 7^2\times {\mathrm{193}}^1\times {\mathrm{563}}^1$

素因数の和:774

約数の個数: 36

約数和(自身を含む): 43656984

約数和(自身を除く): 22359820

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 193, 196, 386, 563, 772, 1126, 1351, 2252, 2702, 3941, 5404, 7882, 9457, 15764, 18914, 27587, 37828, 55174, 108659, 110348, 217318, 434636, 760613, 1521226, 3042452, 5324291, 10648582, 21297164]

約数ペア:

[(1, 21297164), (2, 10648582), (4, 5324291), (7, 3042452), (14, 1521226), (28, 760613), (49, 434636), (98, 217318), (193, 110348), (196, 108659), (386, 55174), (563, 37828), (772, 27587), (1126, 18914), (1351, 15764), (2252, 9457), (2702, 7882), (3941, 5404)]