21228354

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:855

約数の個数: 48

約数和(自身を含む): 52827840

約数和(自身を除く): 31599486

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 331, 509, 662, 993, 1018, 1527, 1986, 2317, 2979, 3054, 3563, 4581, 4634, 5958, 6951, 7126, 9162, 10689, 13902, 20853, 21378, 32067, 41706, 64134, 168479, 336958, 505437, 1010874, 1179353, 1516311, 2358706, 3032622, 3538059, 7076118, 10614177, 21228354]

約数ペア:

[(1, 21228354), (2, 10614177), (3, 7076118), (6, 3538059), (7, 3032622), (9, 2358706), (14, 1516311), (18, 1179353), (21, 1010874), (42, 505437), (63, 336958), (126, 168479), (331, 64134), (509, 41706), (662, 32067), (993, 21378), (1018, 20853), (1527, 13902), (1986, 10689), (2317, 9162), (2979, 7126), (3054, 6951), (3563, 5958), (4581, 4634)]