21990072132

素因数分解:

$2^2\times 3^6\times 7^1\times {\mathrm{1077311}}^1$

素因数の和:1077340

約数の個数: 84

約数和(自身を含む): 65940112896

約数和(自身を除く): 43950040764

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 729, 756, 972, 1134, 1458, 1701, 2268, 2916, 3402, 5103, 6804, 10206, 20412, 1077311, 2154622, 3231933, 4309244, 6463866, 7541177, 9695799, 12927732, 15082354, 19391598, 22623531, 29087397, 30164708, 38783196, 45247062, 58174794, 67870593, 87262191, 90494124, 116349588, 135741186, 174524382, 203611779, 261786573, 271482372, 349048764, 407223558, 523573146, 610835337, 785359719, 814447116, 1047146292, 1221670674, 1570719438, 1832506011, 2443341348, 3141438876, 3665012022, 5497518033, 7330024044, 10995036066, 21990072132]

約数ペア:

[(1, 21990072132), (2, 10995036066), (3, 7330024044), (4, 5497518033), (6, 3665012022), (7, 3141438876), (9, 2443341348), (12, 1832506011), (14, 1570719438), (18, 1221670674), (21, 1047146292), (27, 814447116), (28, 785359719), (36, 610835337), (42, 523573146), (54, 407223558), (63, 349048764), (81, 271482372), (84, 261786573), (108, 203611779), (126, 174524382), (162, 135741186), (189, 116349588), (243, 90494124), (252, 87262191), (324, 67870593), (378, 58174794), (486, 45247062), (567, 38783196), (729, 30164708), (756, 29087397), (972, 22623531), (1134, 19391598), (1458, 15082354), (1701, 12927732), (2268, 9695799), (2916, 7541177), (3402, 6463866), (5103, 4309244), (6804, 3231933), (10206, 2154622), (20412, 1077311)]