21371845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{5323}}^1$

素因数の和:5412

約数の個数: 16

約数和(自身を含む): 28366272

約数和(自身を除く): 6994427

約数列:

[1, 5, 11, 55, 73, 365, 803, 4015, 5323, 26615, 58553, 292765, 388579, 1942895, 4274369, 21371845]

約数ペア:

[(1, 21371845), (5, 4274369), (11, 1942895), (55, 388579), (73, 292765), (365, 58553), (803, 26615), (4015, 5323)]