21511035

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1$

素因数の和:154

約数の個数: 128

約数和(自身を含む): 50319360

約数和(自身を除く): 28808325

約数列:

[1, 3, 5, 7, 9, 13, 15, 17, 21, 27, 35, 39, 45, 51, 63, 65, 85, 91, 103, 105, 117, 119, 135, 153, 189, 195, 221, 255, 273, 309, 315, 351, 357, 455, 459, 515, 585, 595, 663, 721, 765, 819, 927, 945, 1071, 1105, 1339, 1365, 1545, 1547, 1751, 1755, 1785, 1989, 2163, 2295, 2457, 2781, 3213, 3315, 3605, 4017, 4095, 4635, 4641, 5253, 5355, 5967, 6489, 6695, 7735, 8755, 9373, 9945, 10815, 12051, 12257, 12285, 13905, 13923, 15759, 16065, 19467, 20085, 22763, 23205, 26265, 28119, 29835, 32445, 36153, 36771, 41769, 46865, 47277, 60255, 61285, 68289, 69615, 78795, 84357, 97335, 110313, 113815, 140595, 159341, 180765, 183855, 204867, 208845, 236385, 253071, 330939, 341445, 421785, 478023, 551565, 614601, 796705, 1024335, 1265355, 1434069, 1654695, 2390115, 3073005, 4302207, 7170345, 21511035]

約数ペア:

[(1, 21511035), (3, 7170345), (5, 4302207), (7, 3073005), (9, 2390115), (13, 1654695), (15, 1434069), (17, 1265355), (21, 1024335), (27, 796705), (35, 614601), (39, 551565), (45, 478023), (51, 421785), (63, 341445), (65, 330939), (85, 253071), (91, 236385), (103, 208845), (105, 204867), (117, 183855), (119, 180765), (135, 159341), (153, 140595), (189, 113815), (195, 110313), (221, 97335), (255, 84357), (273, 78795), (309, 69615), (315, 68289), (351, 61285), (357, 60255), (455, 47277), (459, 46865), (515, 41769), (585, 36771), (595, 36153), (663, 32445), (721, 29835), (765, 28119), (819, 26265), (927, 23205), (945, 22763), (1071, 20085), (1105, 19467), (1339, 16065), (1365, 15759), (1545, 13923), (1547, 13905), (1751, 12285), (1755, 12257), (1785, 12051), (1989, 10815), (2163, 9945), (2295, 9373), (2457, 8755), (2781, 7735), (3213, 6695), (3315, 6489), (3605, 5967), (4017, 5355), (4095, 5253), (4635, 4641)]