20844369

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 38298624

約数和(自身を除く): 17454255

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 63, 91, 93, 117, 217, 273, 279, 403, 651, 819, 821, 1209, 1953, 2463, 2821, 3627, 5747, 7389, 8463, 10673, 17241, 25389, 25451, 32019, 51723, 74711, 76353, 96057, 178157, 224133, 229059, 330863, 534471, 672399, 992589, 1603413, 2316041, 2977767, 6948123, 20844369]

約数ペア:

[(1, 20844369), (3, 6948123), (7, 2977767), (9, 2316041), (13, 1603413), (21, 992589), (31, 672399), (39, 534471), (63, 330863), (91, 229059), (93, 224133), (117, 178157), (217, 96057), (273, 76353), (279, 74711), (403, 51723), (651, 32019), (819, 25451), (821, 25389), (1209, 17241), (1953, 10673), (2463, 8463), (2821, 7389), (3627, 5747)]