21665776

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:99

約数の個数: 90

約数和(自身を含む): 50267616

約数和(自身を除く): 28601840

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 31, 38, 44, 62, 76, 88, 121, 124, 152, 176, 209, 242, 248, 304, 341, 361, 418, 484, 496, 589, 682, 722, 836, 968, 1178, 1364, 1444, 1672, 1936, 2299, 2356, 2728, 2888, 3344, 3751, 3971, 4598, 4712, 5456, 5776, 6479, 7502, 7942, 9196, 9424, 11191, 12958, 15004, 15884, 18392, 22382, 25916, 30008, 31768, 36784, 43681, 44764, 51832, 60016, 63536, 71269, 87362, 89528, 103664, 123101, 142538, 174724, 179056, 246202, 285076, 349448, 492404, 570152, 698896, 984808, 1140304, 1354111, 1969616, 2708222, 5416444, 10832888, 21665776]

約数ペア:

[(1, 21665776), (2, 10832888), (4, 5416444), (8, 2708222), (11, 1969616), (16, 1354111), (19, 1140304), (22, 984808), (31, 698896), (38, 570152), (44, 492404), (62, 349448), (76, 285076), (88, 246202), (121, 179056), (124, 174724), (152, 142538), (176, 123101), (209, 103664), (242, 89528), (248, 87362), (304, 71269), (341, 63536), (361, 60016), (418, 51832), (484, 44764), (496, 43681), (589, 36784), (682, 31768), (722, 30008), (836, 25916), (968, 22382), (1178, 18392), (1364, 15884), (1444, 15004), (1672, 12958), (1936, 11191), (2299, 9424), (2356, 9196), (2728, 7942), (2888, 7502), (3344, 6479), (3751, 5776), (3971, 5456), (4598, 4712)]