20809902035

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{487}}^1\times {\mathrm{829}}^1$

素因数の和:1408

約数の個数: 48

約数和(自身を含む): 27573503040

約数和(自身を除く): 6763601005

約数列:

[1, 5, 13, 61, 65, 169, 305, 487, 793, 829, 845, 2435, 3965, 4145, 6331, 10309, 10777, 29707, 31655, 50569, 51545, 53885, 82303, 140101, 148535, 252845, 386191, 403723, 411515, 657397, 700505, 1930955, 2018615, 3286985, 5020483, 5248399, 8546161, 24627103, 25102415, 26241995, 42730805, 68229187, 123135515, 320152339, 341145935, 1600761695, 4161980407, 20809902035]

約数ペア:

[(1, 20809902035), (5, 4161980407), (13, 1600761695), (61, 341145935), (65, 320152339), (169, 123135515), (305, 68229187), (487, 42730805), (793, 26241995), (829, 25102415), (845, 24627103), (2435, 8546161), (3965, 5248399), (4145, 5020483), (6331, 3286985), (10309, 2018615), (10777, 1930955), (29707, 700505), (31655, 657397), (50569, 411515), (51545, 403723), (53885, 386191), (82303, 252845), (140101, 148535)]