20792289

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 35287040

約数和(自身を除く): 14494751

約数列:

[1, 3, 7, 19, 21, 31, 41, 57, 93, 123, 133, 217, 287, 399, 589, 651, 779, 861, 1271, 1681, 1767, 2337, 3813, 4123, 5043, 5453, 8897, 11767, 12369, 16359, 24149, 26691, 31939, 35301, 52111, 72447, 95817, 156333, 169043, 223573, 364777, 507129, 670719, 990109, 1094331, 2970327, 6930763, 20792289]

約数ペア:

[(1, 20792289), (3, 6930763), (7, 2970327), (19, 1094331), (21, 990109), (31, 670719), (41, 507129), (57, 364777), (93, 223573), (123, 169043), (133, 156333), (217, 95817), (287, 72447), (399, 52111), (589, 35301), (651, 31939), (779, 26691), (861, 24149), (1271, 16359), (1681, 12369), (1767, 11767), (2337, 8897), (3813, 5453), (4123, 5043)]