21087990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:227

約数の個数: 192

約数和(自身を含む): 72783360

約数和(自身を除く): 51695370

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 17, 18, 21, 22, 30, 33, 34, 35, 42, 45, 51, 55, 63, 66, 70, 77, 85, 90, 99, 102, 105, 110, 119, 126, 153, 154, 165, 170, 179, 187, 198, 210, 231, 238, 255, 306, 315, 330, 357, 358, 374, 385, 462, 495, 510, 537, 561, 595, 630, 693, 714, 765, 770, 895, 935, 990, 1071, 1074, 1122, 1155, 1190, 1253, 1309, 1386, 1530, 1611, 1683, 1785, 1790, 1870, 1969, 2142, 2310, 2506, 2618, 2685, 2805, 3043, 3222, 3366, 3465, 3570, 3759, 3927, 3938, 5355, 5370, 5610, 5907, 6086, 6265, 6545, 6930, 7518, 7854, 8055, 8415, 9129, 9845, 10710, 11277, 11781, 11814, 12530, 13090, 13783, 15215, 16110, 16830, 17721, 18258, 18795, 19635, 19690, 21301, 22554, 23562, 27387, 27566, 29535, 30430, 33473, 35442, 37590, 39270, 41349, 42602, 45645, 54774, 56385, 58905, 59070, 63903, 66946, 68915, 82698, 88605, 91290, 100419, 106505, 112770, 117810, 124047, 127806, 136935, 137830, 167365, 177210, 191709, 200838, 206745, 213010, 234311, 248094, 273870, 301257, 319515, 334730, 383418, 413490, 468622, 502095, 602514, 620235, 639030, 702933, 958545, 1004190, 1171555, 1240470, 1405866, 1506285, 1917090, 2108799, 2343110, 3012570, 3514665, 4217598, 7029330, 10543995, 21087990]

約数ペア:

[(1, 21087990), (2, 10543995), (3, 7029330), (5, 4217598), (6, 3514665), (7, 3012570), (9, 2343110), (10, 2108799), (11, 1917090), (14, 1506285), (15, 1405866), (17, 1240470), (18, 1171555), (21, 1004190), (22, 958545), (30, 702933), (33, 639030), (34, 620235), (35, 602514), (42, 502095), (45, 468622), (51, 413490), (55, 383418), (63, 334730), (66, 319515), (70, 301257), (77, 273870), (85, 248094), (90, 234311), (99, 213010), (102, 206745), (105, 200838), (110, 191709), (119, 177210), (126, 167365), (153, 137830), (154, 136935), (165, 127806), (170, 124047), (179, 117810), (187, 112770), (198, 106505), (210, 100419), (231, 91290), (238, 88605), (255, 82698), (306, 68915), (315, 66946), (330, 63903), (357, 59070), (358, 58905), (374, 56385), (385, 54774), (462, 45645), (495, 42602), (510, 41349), (537, 39270), (561, 37590), (595, 35442), (630, 33473), (693, 30430), (714, 29535), (765, 27566), (770, 27387), (895, 23562), (935, 22554), (990, 21301), (1071, 19690), (1074, 19635), (1122, 18795), (1155, 18258), (1190, 17721), (1253, 16830), (1309, 16110), (1386, 15215), (1530, 13783), (1611, 13090), (1683, 12530), (1785, 11814), (1790, 11781), (1870, 11277), (1969, 10710), (2142, 9845), (2310, 9129), (2506, 8415), (2618, 8055), (2685, 7854), (2805, 7518), (3043, 6930), (3222, 6545), (3366, 6265), (3465, 6086), (3570, 5907), (3759, 5610), (3927, 5370), (3938, 5355)]