81906955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{1997}}^1$

素因数の和:2646

約数の個数: 16

約数和(自身を含む): 106069824

約数和(自身を除く): 24162869

約数列:

[1, 5, 13, 65, 631, 1997, 3155, 8203, 9985, 25961, 41015, 129805, 1260107, 6300535, 16381391, 81906955]

約数ペア:

[(1, 81906955), (5, 16381391), (13, 6300535), (65, 1260107), (631, 129805), (1997, 41015), (3155, 25961), (8203, 9985)]