20915576

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 27347464

約数列:

[1, 2, 4, 8, 11, 17, 22, 31, 34, 41, 44, 62, 68, 82, 88, 121, 124, 136, 164, 187, 242, 248, 328, 341, 374, 451, 484, 527, 682, 697, 748, 902, 968, 1054, 1271, 1364, 1394, 1496, 1804, 2057, 2108, 2542, 2728, 2788, 3608, 3751, 4114, 4216, 4961, 5084, 5576, 5797, 7502, 7667, 8228, 9922, 10168, 11594, 13981, 15004, 15334, 16456, 19844, 21607, 23188, 27962, 30008, 30668, 39688, 43214, 46376, 55924, 61336, 63767, 84337, 86428, 111848, 127534, 153791, 168674, 172856, 237677, 255068, 307582, 337348, 475354, 510136, 615164, 674696, 950708, 1230328, 1901416, 2614447, 5228894, 10457788, 20915576]

約数ペア:

[(1, 20915576), (2, 10457788), (4, 5228894), (8, 2614447), (11, 1901416), (17, 1230328), (22, 950708), (31, 674696), (34, 615164), (41, 510136), (44, 475354), (62, 337348), (68, 307582), (82, 255068), (88, 237677), (121, 172856), (124, 168674), (136, 153791), (164, 127534), (187, 111848), (242, 86428), (248, 84337), (328, 63767), (341, 61336), (374, 55924), (451, 46376), (484, 43214), (527, 39688), (682, 30668), (697, 30008), (748, 27962), (902, 23188), (968, 21607), (1054, 19844), (1271, 16456), (1364, 15334), (1394, 15004), (1496, 13981), (1804, 11594), (2057, 10168), (2108, 9922), (2542, 8228), (2728, 7667), (2788, 7502), (3608, 5797), (3751, 5576), (4114, 5084), (4216, 4961)]