20653971

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7459}}^1$

素因数の和:7546

約数の個数: 16

約数和(自身を含む): 30078720

約数和(自身を除く): 9424749

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7459, 22377, 96967, 290901, 529589, 1588767, 6884657, 20653971]

約数ペア:

[(1, 20653971), (3, 6884657), (13, 1588767), (39, 529589), (71, 290901), (213, 96967), (923, 22377), (2769, 7459)]