20164263

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 32739840

約数和(自身を除く): 12575577

約数列:

[1, 3, 7, 19, 21, 57, 97, 133, 291, 399, 521, 679, 1563, 1843, 2037, 3647, 5529, 9899, 10941, 12901, 29697, 38703, 50537, 69293, 151611, 207879, 353759, 960203, 1061277, 2880609, 6721421, 20164263]

約数ペア:

[(1, 20164263), (3, 6721421), (7, 2880609), (19, 1061277), (21, 960203), (57, 353759), (97, 207879), (133, 151611), (291, 69293), (399, 50537), (521, 38703), (679, 29697), (1563, 12901), (1843, 10941), (2037, 9899), (3647, 5529)]