18981424

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 120

約数和(自身を含む): 48854016

約数和(自身を除く): 29872592

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 44, 49, 56, 62, 71, 77, 88, 98, 112, 124, 142, 154, 176, 196, 217, 248, 284, 308, 341, 392, 434, 496, 497, 539, 568, 616, 682, 781, 784, 868, 994, 1078, 1136, 1232, 1364, 1519, 1562, 1736, 1988, 2156, 2201, 2387, 2728, 3038, 3124, 3472, 3479, 3976, 4312, 4402, 4774, 5456, 5467, 6076, 6248, 6958, 7952, 8624, 8804, 9548, 10934, 12152, 12496, 13916, 15407, 16709, 17608, 19096, 21868, 24211, 24304, 27832, 30814, 33418, 35216, 38192, 38269, 43736, 48422, 55664, 61628, 66836, 76538, 87472, 96844, 107849, 123256, 133672, 153076, 169477, 193688, 215698, 246512, 267344, 306152, 338954, 387376, 431396, 612304, 677908, 862792, 1186339, 1355816, 1725584, 2372678, 2711632, 4745356, 9490712, 18981424]

約数ペア:

[(1, 18981424), (2, 9490712), (4, 4745356), (7, 2711632), (8, 2372678), (11, 1725584), (14, 1355816), (16, 1186339), (22, 862792), (28, 677908), (31, 612304), (44, 431396), (49, 387376), (56, 338954), (62, 306152), (71, 267344), (77, 246512), (88, 215698), (98, 193688), (112, 169477), (124, 153076), (142, 133672), (154, 123256), (176, 107849), (196, 96844), (217, 87472), (248, 76538), (284, 66836), (308, 61628), (341, 55664), (392, 48422), (434, 43736), (496, 38269), (497, 38192), (539, 35216), (568, 33418), (616, 30814), (682, 27832), (781, 24304), (784, 24211), (868, 21868), (994, 19096), (1078, 17608), (1136, 16709), (1232, 15407), (1364, 13916), (1519, 12496), (1562, 12152), (1736, 10934), (1988, 9548), (2156, 8804), (2201, 8624), (2387, 7952), (2728, 6958), (3038, 6248), (3124, 6076), (3472, 5467), (3479, 5456), (3976, 4774), (4312, 4402)]