21151664

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{24943}}^1$

素因数の和:25004

約数の個数: 20

約数和(自身を含む): 41756256

約数和(自身を除く): 20604592

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 24943, 49886, 99772, 199544, 399088, 1321979, 2643958, 5287916, 10575832, 21151664]

約数ペア:

[(1, 21151664), (2, 10575832), (4, 5287916), (8, 2643958), (16, 1321979), (53, 399088), (106, 199544), (212, 99772), (424, 49886), (848, 24943)]