20391952

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1117}}^1$

素因数の和:1295

約数の個数: 40

約数和(自身を含む): 45471296

約数和(自身を除く): 25079344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1117, 1141, 1304, 2234, 2282, 2608, 4468, 4564, 7819, 8936, 9128, 15638, 17872, 18256, 31276, 62552, 125104, 182071, 364142, 728284, 1274497, 1456568, 2548994, 2913136, 5097988, 10195976, 20391952]

約数ペア:

[(1, 20391952), (2, 10195976), (4, 5097988), (7, 2913136), (8, 2548994), (14, 1456568), (16, 1274497), (28, 728284), (56, 364142), (112, 182071), (163, 125104), (326, 62552), (652, 31276), (1117, 18256), (1141, 17872), (1304, 15638), (2234, 9128), (2282, 8936), (2608, 7819), (4468, 4564)]