19904910405

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{19805881}}^1$

素因数の和:19805956

約数の個数: 16

約数和(自身を含む): 32323199424

約数和(自身を除く): 12418289019

約数列:

[1, 3, 5, 15, 67, 201, 335, 1005, 19805881, 59417643, 99029405, 297088215, 1326994027, 3980982081, 6634970135, 19904910405]

約数ペア:

[(1, 19904910405), (3, 6634970135), (5, 3980982081), (15, 1326994027), (67, 297088215), (201, 99029405), (335, 59417643), (1005, 19805881)]