21370468

素因数分解:

$2^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1019}}^1$

素因数の和:1144

約数の個数: 36

約数和(自身を含む): 43953840

約数和(自身を除く): 22583372

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 107, 196, 214, 428, 749, 1019, 1498, 2038, 2996, 4076, 5243, 7133, 10486, 14266, 20972, 28532, 49931, 99862, 109033, 199724, 218066, 436132, 763231, 1526462, 3052924, 5342617, 10685234, 21370468]

約数ペア:

[(1, 21370468), (2, 10685234), (4, 5342617), (7, 3052924), (14, 1526462), (28, 763231), (49, 436132), (98, 218066), (107, 199724), (196, 109033), (214, 99862), (428, 49931), (749, 28532), (1019, 20972), (1498, 14266), (2038, 10486), (2996, 7133), (4076, 5243)]