21879970

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{6379}}^1$

素因数の和:6407

約数の個数: 32

約数和(自身を含む): 45936000

約数和(自身を除く): 24056030

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 6379, 12758, 31895, 44653, 63790, 89306, 223265, 312571, 446530, 625142, 1562855, 2187997, 3125710, 4375994, 10939985, 21879970]

約数ペア:

[(1, 21879970), (2, 10939985), (5, 4375994), (7, 3125710), (10, 2187997), (14, 1562855), (35, 625142), (49, 446530), (70, 312571), (98, 223265), (245, 89306), (343, 63790), (490, 44653), (686, 31895), (1715, 12758), (3430, 6379)]