213891568

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 80

約数和(自身を含む): 471398400

約数和(自身を除く): 257506832

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 176, 197, 199, 248, 341, 394, 398, 496, 682, 788, 796, 1364, 1576, 1592, 2167, 2189, 2728, 3152, 3184, 4334, 4378, 5456, 6107, 6169, 8668, 8756, 12214, 12338, 17336, 17512, 24428, 24676, 34672, 35024, 39203, 48856, 49352, 67177, 67859, 78406, 97712, 98704, 134354, 135718, 156812, 268708, 271436, 313624, 431233, 537416, 542872, 627248, 862466, 1074832, 1085744, 1215293, 1724932, 2430586, 3449864, 4861172, 6899728, 9722344, 13368223, 19444688, 26736446, 53472892, 106945784, 213891568]

約数ペア:

[(1, 213891568), (2, 106945784), (4, 53472892), (8, 26736446), (11, 19444688), (16, 13368223), (22, 9722344), (31, 6899728), (44, 4861172), (62, 3449864), (88, 2430586), (124, 1724932), (176, 1215293), (197, 1085744), (199, 1074832), (248, 862466), (341, 627248), (394, 542872), (398, 537416), (496, 431233), (682, 313624), (788, 271436), (796, 268708), (1364, 156812), (1576, 135718), (1592, 134354), (2167, 98704), (2189, 97712), (2728, 78406), (3152, 67859), (3184, 67177), (4334, 49352), (4378, 48856), (5456, 39203), (6107, 35024), (6169, 34672), (8668, 24676), (8756, 24428), (12214, 17512), (12338, 17336)]