19986498

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1249}}^1$

素因数の和:1391

約数の個数: 48

約数和(自身を含む): 49920000

約数和(自身を除く): 29933502

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 127, 254, 381, 762, 889, 1143, 1249, 1778, 2286, 2498, 2667, 3747, 5334, 7494, 8001, 8743, 11241, 16002, 17486, 22482, 26229, 52458, 78687, 157374, 158623, 317246, 475869, 951738, 1110361, 1427607, 2220722, 2855214, 3331083, 6662166, 9993249, 19986498]

約数ペア:

[(1, 19986498), (2, 9993249), (3, 6662166), (6, 3331083), (7, 2855214), (9, 2220722), (14, 1427607), (18, 1110361), (21, 951738), (42, 475869), (63, 317246), (126, 158623), (127, 157374), (254, 78687), (381, 52458), (762, 26229), (889, 22482), (1143, 17486), (1249, 16002), (1778, 11241), (2286, 8743), (2498, 8001), (2667, 7494), (3747, 5334)]