20399871

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{617}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 27765504

約数和(自身を除く): 7365633

約数列:

[1, 3, 103, 107, 309, 321, 617, 1851, 11021, 33063, 63551, 66019, 190653, 198057, 6799957, 20399871]

約数ペア:

[(1, 20399871), (3, 6799957), (103, 198057), (107, 190653), (309, 66019), (321, 63551), (617, 33063), (1851, 11021)]