20827744

素因数分解:

$2^5\times 7^2\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:420

約数の個数: 72

約数和(自身を含む): 49124880

約数和(自身を除く): 28297136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 49, 56, 74, 98, 112, 148, 196, 224, 259, 296, 359, 392, 518, 592, 718, 784, 1036, 1184, 1436, 1568, 1813, 2072, 2513, 2872, 3626, 4144, 5026, 5744, 7252, 8288, 10052, 11488, 13283, 14504, 17591, 20104, 26566, 29008, 35182, 40208, 53132, 58016, 70364, 80416, 92981, 106264, 140728, 185962, 212528, 281456, 371924, 425056, 562912, 650867, 743848, 1301734, 1487696, 2603468, 2975392, 5206936, 10413872, 20827744]

約数ペア:

[(1, 20827744), (2, 10413872), (4, 5206936), (7, 2975392), (8, 2603468), (14, 1487696), (16, 1301734), (28, 743848), (32, 650867), (37, 562912), (49, 425056), (56, 371924), (74, 281456), (98, 212528), (112, 185962), (148, 140728), (196, 106264), (224, 92981), (259, 80416), (296, 70364), (359, 58016), (392, 53132), (518, 40208), (592, 35182), (718, 29008), (784, 26566), (1036, 20104), (1184, 17591), (1436, 14504), (1568, 13283), (1813, 11488), (2072, 10052), (2513, 8288), (2872, 7252), (3626, 5744), (4144, 5026)]