19917244221

素因数分解:

$3^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{1885567}}^1$

素因数の和:1886080

約数の個数: 16

約数和(自身を含む): 30410440704

約数和(自身を除く): 10493196483

約数列:

[1, 3, 7, 21, 503, 1509, 3521, 10563, 1885567, 5656701, 13198969, 39596907, 948440201, 2845320603, 6639081407, 19917244221]

約数ペア:

[(1, 19917244221), (3, 6639081407), (7, 2845320603), (21, 948440201), (503, 39596907), (1509, 13198969), (3521, 5656701), (10563, 1885567)]