20281408

素因数分解:

$2^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2663}}^1$

素因数の和:2699

約数の個数: 56

約数和(自身を含む): 48719232

約数和(自身を除く): 28437824

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 136, 224, 238, 272, 448, 476, 544, 952, 1088, 1904, 2663, 3808, 5326, 7616, 10652, 18641, 21304, 37282, 42608, 45271, 74564, 85216, 90542, 149128, 170432, 181084, 298256, 316897, 362168, 596512, 633794, 724336, 1193024, 1267588, 1448672, 2535176, 2897344, 5070352, 10140704, 20281408]

約数ペア:

[(1, 20281408), (2, 10140704), (4, 5070352), (7, 2897344), (8, 2535176), (14, 1448672), (16, 1267588), (17, 1193024), (28, 724336), (32, 633794), (34, 596512), (56, 362168), (64, 316897), (68, 298256), (112, 181084), (119, 170432), (136, 149128), (224, 90542), (238, 85216), (272, 74564), (448, 45271), (476, 42608), (544, 37282), (952, 21304), (1088, 18641), (1904, 10652), (2663, 7616), (3808, 5326)]