20808297720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8257261}}^1$

素因数の和:8257285

約数の個数: 96

約数和(自身を含む): 77287972320

約数和(自身を除く): 56479674600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8257261, 16514522, 24771783, 33029044, 41286305, 49543566, 57800827, 66058088, 74315349, 82572610, 99087132, 115601654, 123858915, 148630698, 165145220, 173402481, 198174264, 231203308, 247717830, 289004135, 297261396, 330290440, 346804962, 371576745, 462406616, 495435660, 520207443, 578008270, 594522792, 693609924, 743153490, 867012405, 990871320, 1040414886, 1156016540, 1387219848, 1486306980, 1734024810, 2080829772, 2312033080, 2601037215, 2972613960, 3468049620, 4161659544, 5202074430, 6936099240, 10404148860, 20808297720]

約数ペア:

[(1, 20808297720), (2, 10404148860), (3, 6936099240), (4, 5202074430), (5, 4161659544), (6, 3468049620), (7, 2972613960), (8, 2601037215), (9, 2312033080), (10, 2080829772), (12, 1734024810), (14, 1486306980), (15, 1387219848), (18, 1156016540), (20, 1040414886), (21, 990871320), (24, 867012405), (28, 743153490), (30, 693609924), (35, 594522792), (36, 578008270), (40, 520207443), (42, 495435660), (45, 462406616), (56, 371576745), (60, 346804962), (63, 330290440), (70, 297261396), (72, 289004135), (84, 247717830), (90, 231203308), (105, 198174264), (120, 173402481), (126, 165145220), (140, 148630698), (168, 123858915), (180, 115601654), (210, 99087132), (252, 82572610), (280, 74315349), (315, 66058088), (360, 57800827), (420, 49543566), (504, 41286305), (630, 33029044), (840, 24771783), (1260, 16514522), (2520, 8257261)]