19218500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:79

約数の個数: 144

約数和(自身を含む): 53639040

約数和(自身を除く): 34420540

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 25, 28, 34, 35, 38, 50, 68, 70, 76, 85, 95, 100, 119, 125, 133, 140, 170, 175, 190, 238, 250, 266, 289, 323, 340, 350, 380, 425, 475, 476, 500, 532, 578, 595, 646, 665, 700, 850, 875, 950, 1156, 1190, 1292, 1330, 1445, 1615, 1700, 1750, 1900, 2023, 2125, 2261, 2375, 2380, 2660, 2890, 2975, 3230, 3325, 3500, 4046, 4250, 4522, 4750, 5491, 5780, 5950, 6460, 6650, 7225, 8075, 8092, 8500, 9044, 9500, 10115, 10982, 11305, 11900, 13300, 14450, 14875, 16150, 16625, 20230, 21964, 22610, 27455, 28900, 29750, 32300, 33250, 36125, 38437, 40375, 40460, 45220, 50575, 54910, 56525, 59500, 66500, 72250, 76874, 80750, 101150, 109820, 113050, 137275, 144500, 153748, 161500, 192185, 202300, 226100, 252875, 274550, 282625, 384370, 505750, 549100, 565250, 686375, 768740, 960925, 1011500, 1130500, 1372750, 1921850, 2745500, 3843700, 4804625, 9609250, 19218500]

約数ペア:

[(1, 19218500), (2, 9609250), (4, 4804625), (5, 3843700), (7, 2745500), (10, 1921850), (14, 1372750), (17, 1130500), (19, 1011500), (20, 960925), (25, 768740), (28, 686375), (34, 565250), (35, 549100), (38, 505750), (50, 384370), (68, 282625), (70, 274550), (76, 252875), (85, 226100), (95, 202300), (100, 192185), (119, 161500), (125, 153748), (133, 144500), (140, 137275), (170, 113050), (175, 109820), (190, 101150), (238, 80750), (250, 76874), (266, 72250), (289, 66500), (323, 59500), (340, 56525), (350, 54910), (380, 50575), (425, 45220), (475, 40460), (476, 40375), (500, 38437), (532, 36125), (578, 33250), (595, 32300), (646, 29750), (665, 28900), (700, 27455), (850, 22610), (875, 21964), (950, 20230), (1156, 16625), (1190, 16150), (1292, 14875), (1330, 14450), (1445, 13300), (1615, 11900), (1700, 11305), (1750, 10982), (1900, 10115), (2023, 9500), (2125, 9044), (2261, 8500), (2375, 8092), (2380, 8075), (2660, 7225), (2890, 6650), (2975, 6460), (3230, 5950), (3325, 5780), (3500, 5491), (4046, 4750), (4250, 4522)]