21051706

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15277}}^1$

素因数の和:15345

約数の個数: 16

約数和(自身を含む): 34650504

約数和(自身を除く): 13598798

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15277, 30554, 198601, 397202, 809681, 1619362, 10525853, 21051706]

約数ペア:

[(1, 21051706), (2, 10525853), (13, 1619362), (26, 809681), (53, 397202), (106, 198601), (689, 30554), (1378, 15277)]