20822879

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 28047360

約数和(自身を除く): 7224481

約数列:

[1, 7, 11, 19, 43, 77, 133, 209, 301, 331, 473, 817, 1463, 2317, 3311, 3641, 5719, 6289, 8987, 14233, 25487, 44023, 62909, 69179, 99631, 156563, 270427, 484253, 1095941, 1892989, 2974697, 20822879]

約数ペア:

[(1, 20822879), (7, 2974697), (11, 1892989), (19, 1095941), (43, 484253), (77, 270427), (133, 156563), (209, 99631), (301, 69179), (331, 62909), (473, 44023), (817, 25487), (1463, 14233), (2317, 8987), (3311, 6289), (3641, 5719)]