21173185

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{443}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 28344960

約数和(自身を除く): 7171775

約数列:

[1, 5, 11, 55, 79, 121, 395, 443, 605, 869, 2215, 4345, 4873, 9559, 24365, 34997, 47795, 53603, 174985, 268015, 384967, 1924835, 4234637, 21173185]

約数ペア:

[(1, 21173185), (5, 4234637), (11, 1924835), (55, 384967), (79, 268015), (121, 174985), (395, 53603), (443, 47795), (605, 34997), (869, 24365), (2215, 9559), (4345, 4873)]