19982859

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{1637}}^1$

素因数の和:1966

約数の個数: 16

約数和(自身を含む): 28802592

約数和(自身を除く): 8819733

約数列:

[1, 3, 13, 39, 313, 939, 1637, 4069, 4911, 12207, 21281, 63843, 512381, 1537143, 6660953, 19982859]

約数ペア:

[(1, 19982859), (3, 6660953), (13, 1537143), (39, 512381), (313, 63843), (939, 21281), (1637, 12207), (4069, 4911)]