20245904

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1109}}^1$

素因数の和:1287

約数の個数: 40

約数和(自身を含む): 45145920

約数和(自身を除く): 24900016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1109, 1141, 1304, 2218, 2282, 2608, 4436, 4564, 7763, 8872, 9128, 15526, 17744, 18256, 31052, 62104, 124208, 180767, 361534, 723068, 1265369, 1446136, 2530738, 2892272, 5061476, 10122952, 20245904]

約数ペア:

[(1, 20245904), (2, 10122952), (4, 5061476), (7, 2892272), (8, 2530738), (14, 1446136), (16, 1265369), (28, 723068), (56, 361534), (112, 180767), (163, 124208), (326, 62104), (652, 31052), (1109, 18256), (1141, 17744), (1304, 15526), (2218, 9128), (2282, 8872), (2608, 7763), (4436, 4564)]