19903408

素因数分解:

$2^4\times 7^2\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:554

約数の個数: 60

約数和(自身を含む): 45800640

約数和(自身を除く): 25897232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 53, 56, 98, 106, 112, 196, 212, 371, 392, 424, 479, 742, 784, 848, 958, 1484, 1916, 2597, 2968, 3353, 3832, 5194, 5936, 6706, 7664, 10388, 13412, 20776, 23471, 25387, 26824, 41552, 46942, 50774, 53648, 93884, 101548, 177709, 187768, 203096, 355418, 375536, 406192, 710836, 1243963, 1421672, 2487926, 2843344, 4975852, 9951704, 19903408]

約数ペア:

[(1, 19903408), (2, 9951704), (4, 4975852), (7, 2843344), (8, 2487926), (14, 1421672), (16, 1243963), (28, 710836), (49, 406192), (53, 375536), (56, 355418), (98, 203096), (106, 187768), (112, 177709), (196, 101548), (212, 93884), (371, 53648), (392, 50774), (424, 46942), (479, 41552), (742, 26824), (784, 25387), (848, 23471), (958, 20776), (1484, 13412), (1916, 10388), (2597, 7664), (2968, 6706), (3353, 5936), (3832, 5194)]