21000604815

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{709}}^1\times {\mathrm{1249}}^1$

素因数の和:2017

約数の個数: 96

約数和(自身を含む): 39873600000

約数和(自身を除く): 18872995185

約数列:

[1, 3, 5, 9, 15, 17, 31, 45, 51, 85, 93, 153, 155, 255, 279, 465, 527, 709, 765, 1249, 1395, 1581, 2127, 2635, 3545, 3747, 4743, 6245, 6381, 7905, 10635, 11241, 12053, 18735, 21233, 21979, 23715, 31905, 36159, 38719, 56205, 60265, 63699, 65937, 106165, 108477, 109895, 116157, 180795, 191097, 193595, 197811, 318495, 329685, 348471, 373643, 542385, 580785, 658223, 885541, 955485, 989055, 1120929, 1742355, 1868215, 1974669, 2656623, 3291115, 3362787, 4427705, 5604645, 5924007, 7969869, 9873345, 13283115, 15054197, 16813935, 27451771, 29620035, 39849345, 45162591, 75270985, 82355313, 135487773, 137258855, 225812955, 247065939, 411776565, 466680107, 677438865, 1235329695, 1400040321, 2333400535, 4200120963, 7000201605, 21000604815]

約数ペア:

[(1, 21000604815), (3, 7000201605), (5, 4200120963), (9, 2333400535), (15, 1400040321), (17, 1235329695), (31, 677438865), (45, 466680107), (51, 411776565), (85, 247065939), (93, 225812955), (153, 137258855), (155, 135487773), (255, 82355313), (279, 75270985), (465, 45162591), (527, 39849345), (709, 29620035), (765, 27451771), (1249, 16813935), (1395, 15054197), (1581, 13283115), (2127, 9873345), (2635, 7969869), (3545, 5924007), (3747, 5604645), (4743, 4427705), (6245, 3362787), (6381, 3291115), (7905, 2656623), (10635, 1974669), (11241, 1868215), (12053, 1742355), (18735, 1120929), (21233, 989055), (21979, 955485), (23715, 885541), (31905, 658223), (36159, 580785), (38719, 542385), (56205, 373643), (60265, 348471), (63699, 329685), (65937, 318495), (106165, 197811), (108477, 193595), (109895, 191097), (116157, 180795)]