20173293

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{757}}^1$

素因数の和:823

約数の個数: 40

約数和(自身を含む): 35219712

約数和(自身を除く): 15046419

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 757, 987, 1269, 2271, 2961, 3807, 5299, 6813, 8883, 15897, 20439, 26649, 35579, 47691, 61317, 106737, 143073, 249053, 320211, 429219, 747159, 960633, 2241477, 2881899, 6724431, 20173293]

約数ペア:

[(1, 20173293), (3, 6724431), (7, 2881899), (9, 2241477), (21, 960633), (27, 747159), (47, 429219), (63, 320211), (81, 249053), (141, 143073), (189, 106737), (329, 61317), (423, 47691), (567, 35579), (757, 26649), (987, 20439), (1269, 15897), (2271, 8883), (2961, 6813), (3807, 5299)]