19979559

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{317}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 29764800

約数和(自身を除く): 9785241

約数列:

[1, 3, 9, 47, 141, 149, 317, 423, 447, 951, 1341, 2853, 7003, 14899, 21009, 44697, 47233, 63027, 134091, 141699, 425097, 2219951, 6659853, 19979559]

約数ペア:

[(1, 19979559), (3, 6659853), (9, 2219951), (47, 425097), (141, 141699), (149, 134091), (317, 63027), (423, 47233), (447, 44697), (951, 21009), (1341, 14899), (2853, 7003)]