21171458

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137477}}^1$

素因数の和:137497

約数の個数: 16

約数和(自身を含む): 39593664

約数和(自身を除く): 18422206

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 137477, 274954, 962339, 1512247, 1924678, 3024494, 10585729, 21171458]

約数ペア:

[(1, 21171458), (2, 10585729), (7, 3024494), (11, 1924678), (14, 1512247), (22, 962339), (77, 274954), (154, 137477)]