21096850

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6917}}^1$

素因数の和:6990

約数の個数: 24

約数和(自身を含む): 39889188

約数和(自身を除く): 18792338

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 305, 610, 1525, 3050, 6917, 13834, 34585, 69170, 172925, 345850, 421937, 843874, 2109685, 4219370, 10548425, 21096850]

約数ペア:

[(1, 21096850), (2, 10548425), (5, 4219370), (10, 2109685), (25, 843874), (50, 421937), (61, 345850), (122, 172925), (305, 69170), (610, 34585), (1525, 13834), (3050, 6917)]