20817720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{751}}^1$

素因数の和:786

約数の個数: 192

約数和(自身を含む): 84464640

約数和(自身を除く): 63646920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 110, 120, 126, 132, 140, 154, 165, 168, 180, 198, 210, 220, 231, 252, 264, 280, 308, 315, 330, 360, 385, 396, 420, 440, 462, 495, 504, 616, 630, 660, 693, 751, 770, 792, 840, 924, 990, 1155, 1260, 1320, 1386, 1502, 1540, 1848, 1980, 2253, 2310, 2520, 2772, 3004, 3080, 3465, 3755, 3960, 4506, 4620, 5257, 5544, 6008, 6759, 6930, 7510, 8261, 9012, 9240, 10514, 11265, 13518, 13860, 15020, 15771, 16522, 18024, 21028, 22530, 24783, 26285, 27036, 27720, 30040, 31542, 33044, 33795, 41305, 42056, 45060, 47313, 49566, 52570, 54072, 57827, 63084, 66088, 67590, 74349, 78855, 82610, 90120, 94626, 99132, 105140, 115654, 123915, 126168, 135180, 148698, 157710, 165220, 173481, 189252, 198264, 210280, 231308, 236565, 247830, 270360, 289135, 297396, 315420, 330440, 346962, 371745, 378504, 462616, 473130, 495660, 520443, 578270, 594792, 630840, 693924, 743490, 867405, 946260, 991320, 1040886, 1156540, 1387848, 1486980, 1734810, 1892520, 2081772, 2313080, 2602215, 2973960, 3469620, 4163544, 5204430, 6939240, 10408860, 20817720]

約数ペア:

[(1, 20817720), (2, 10408860), (3, 6939240), (4, 5204430), (5, 4163544), (6, 3469620), (7, 2973960), (8, 2602215), (9, 2313080), (10, 2081772), (11, 1892520), (12, 1734810), (14, 1486980), (15, 1387848), (18, 1156540), (20, 1040886), (21, 991320), (22, 946260), (24, 867405), (28, 743490), (30, 693924), (33, 630840), (35, 594792), (36, 578270), (40, 520443), (42, 495660), (44, 473130), (45, 462616), (55, 378504), (56, 371745), (60, 346962), (63, 330440), (66, 315420), (70, 297396), (72, 289135), (77, 270360), (84, 247830), (88, 236565), (90, 231308), (99, 210280), (105, 198264), (110, 189252), (120, 173481), (126, 165220), (132, 157710), (140, 148698), (154, 135180), (165, 126168), (168, 123915), (180, 115654), (198, 105140), (210, 99132), (220, 94626), (231, 90120), (252, 82610), (264, 78855), (280, 74349), (308, 67590), (315, 66088), (330, 63084), (360, 57827), (385, 54072), (396, 52570), (420, 49566), (440, 47313), (462, 45060), (495, 42056), (504, 41305), (616, 33795), (630, 33044), (660, 31542), (693, 30040), (751, 27720), (770, 27036), (792, 26285), (840, 24783), (924, 22530), (990, 21028), (1155, 18024), (1260, 16522), (1320, 15771), (1386, 15020), (1502, 13860), (1540, 13518), (1848, 11265), (1980, 10514), (2253, 9240), (2310, 9012), (2520, 8261), (2772, 7510), (3004, 6930), (3080, 6759), (3465, 6008), (3755, 5544), (3960, 5257), (4506, 4620)]