21391994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{601}}^1$

素因数の和:690

約数の個数: 24

約数和(自身を含む): 35574588

約数和(自身を除く): 14182594

約数列:

[1, 2, 13, 26, 37, 74, 481, 601, 962, 1202, 1369, 2738, 7813, 15626, 17797, 22237, 35594, 44474, 289081, 578162, 822769, 1645538, 10695997, 21391994]

約数ペア:

[(1, 21391994), (2, 10695997), (13, 1645538), (26, 822769), (37, 578162), (74, 289081), (481, 44474), (601, 35594), (962, 22237), (1202, 17797), (1369, 15626), (2738, 7813)]