20208915

素因数分解:

$3^2\times 5^1\times {\mathrm{547}}^1\times {\mathrm{821}}^1$

素因数の和:1379

約数の個数: 24

約数和(自身を含む): 35135568

約数和(自身を除く): 14926653

約数列:

[1, 3, 5, 9, 15, 45, 547, 821, 1641, 2463, 2735, 4105, 4923, 7389, 8205, 12315, 24615, 36945, 449087, 1347261, 2245435, 4041783, 6736305, 20208915]

約数ペア:

[(1, 20208915), (3, 6736305), (5, 4041783), (9, 2245435), (15, 1347261), (45, 449087), (547, 36945), (821, 24615), (1641, 12315), (2463, 8205), (2735, 7389), (4105, 4923)]