20757968

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:145

約数の個数: 120

約数和(自身を含む): 53434080

約数和(自身を除く): 32676112

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 29, 44, 49, 56, 58, 77, 83, 88, 98, 112, 116, 154, 166, 176, 196, 203, 232, 308, 319, 332, 392, 406, 464, 539, 581, 616, 638, 664, 784, 812, 913, 1078, 1162, 1232, 1276, 1328, 1421, 1624, 1826, 2156, 2233, 2324, 2407, 2552, 2842, 3248, 3652, 4067, 4312, 4466, 4648, 4814, 5104, 5684, 6391, 7304, 8134, 8624, 8932, 9296, 9628, 11368, 12782, 14608, 15631, 16268, 16849, 17864, 19256, 22736, 25564, 26477, 31262, 32536, 33698, 35728, 38512, 44737, 51128, 52954, 62524, 65072, 67396, 89474, 102256, 105908, 117943, 125048, 134792, 178948, 185339, 211816, 235886, 250096, 269584, 357896, 370678, 423632, 471772, 715792, 741356, 943544, 1297373, 1482712, 1887088, 2594746, 2965424, 5189492, 10378984, 20757968]

約数ペア:

[(1, 20757968), (2, 10378984), (4, 5189492), (7, 2965424), (8, 2594746), (11, 1887088), (14, 1482712), (16, 1297373), (22, 943544), (28, 741356), (29, 715792), (44, 471772), (49, 423632), (56, 370678), (58, 357896), (77, 269584), (83, 250096), (88, 235886), (98, 211816), (112, 185339), (116, 178948), (154, 134792), (166, 125048), (176, 117943), (196, 105908), (203, 102256), (232, 89474), (308, 67396), (319, 65072), (332, 62524), (392, 52954), (406, 51128), (464, 44737), (539, 38512), (581, 35728), (616, 33698), (638, 32536), (664, 31262), (784, 26477), (812, 25564), (913, 22736), (1078, 19256), (1162, 17864), (1232, 16849), (1276, 16268), (1328, 15631), (1421, 14608), (1624, 12782), (1826, 11368), (2156, 9628), (2233, 9296), (2324, 8932), (2407, 8624), (2552, 8134), (2842, 7304), (3248, 6391), (3652, 5684), (4067, 5104), (4312, 4814), (4466, 4648)]