21312912

素因数分解:

$2^4\times 3^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:352

約数の個数: 80

約数和(自身を含む): 58121280

約数和(自身を除く): 36808368

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 48, 58, 61, 87, 116, 122, 174, 183, 232, 244, 251, 348, 366, 464, 488, 502, 696, 732, 753, 976, 1004, 1392, 1464, 1506, 1769, 2008, 2928, 3012, 3538, 4016, 5307, 6024, 7076, 7279, 10614, 12048, 14152, 14558, 15311, 21228, 21837, 28304, 29116, 30622, 42456, 43674, 45933, 58232, 61244, 84912, 87348, 91866, 116464, 122488, 174696, 183732, 244976, 349392, 367464, 444019, 734928, 888038, 1332057, 1776076, 2664114, 3552152, 5328228, 7104304, 10656456, 21312912]

約数ペア:

[(1, 21312912), (2, 10656456), (3, 7104304), (4, 5328228), (6, 3552152), (8, 2664114), (12, 1776076), (16, 1332057), (24, 888038), (29, 734928), (48, 444019), (58, 367464), (61, 349392), (87, 244976), (116, 183732), (122, 174696), (174, 122488), (183, 116464), (232, 91866), (244, 87348), (251, 84912), (348, 61244), (366, 58232), (464, 45933), (488, 43674), (502, 42456), (696, 30622), (732, 29116), (753, 28304), (976, 21837), (1004, 21228), (1392, 15311), (1464, 14558), (1506, 14152), (1769, 12048), (2008, 10614), (2928, 7279), (3012, 7076), (3538, 6024), (4016, 5307)]