21805017

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{1367}}^1$

素因数の和:1792

約数の個数: 16

約数和(自身を含む): 31409280

約数和(自身を除く): 9604263

約数列:

[1, 3, 13, 39, 409, 1227, 1367, 4101, 5317, 15951, 17771, 53313, 559103, 1677309, 7268339, 21805017]

約数ペア:

[(1, 21805017), (3, 7268339), (13, 1677309), (39, 559103), (409, 53313), (1227, 17771), (1367, 15951), (4101, 5317)]