20809782

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{521}}^1$

素因数の和:853

約数の個数: 48

約数和(自身を含む): 51790752

約数和(自身を除く): 30980970

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 317, 521, 634, 951, 1042, 1563, 1902, 2219, 2853, 3126, 3647, 4438, 4689, 5706, 6657, 7294, 9378, 10941, 13314, 19971, 21882, 32823, 39942, 65646, 165157, 330314, 495471, 990942, 1156099, 1486413, 2312198, 2972826, 3468297, 6936594, 10404891, 20809782]

約数ペア:

[(1, 20809782), (2, 10404891), (3, 6936594), (6, 3468297), (7, 2972826), (9, 2312198), (14, 1486413), (18, 1156099), (21, 990942), (42, 495471), (63, 330314), (126, 165157), (317, 65646), (521, 39942), (634, 32823), (951, 21882), (1042, 19971), (1563, 13314), (1902, 10941), (2219, 9378), (2853, 7294), (3126, 6657), (3647, 5706), (4438, 4689)]