21503430557

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{488459}}^1$

素因数の和:488816

約数の個数: 16

約数和(自身を含む): 25946995200

約数和(自身を除く): 4443564643

約数列:

[1, 7, 19, 133, 331, 2317, 6289, 44023, 488459, 3419213, 9280721, 64965047, 161679929, 1131759503, 3071918651, 21503430557]

約数ペア:

[(1, 21503430557), (7, 3071918651), (19, 1131759503), (133, 161679929), (331, 64965047), (2317, 9280721), (6289, 3419213), (44023, 488459)]