211671691

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2543}}^1$

素因数の和:2631

約数の個数: 32

約数和(自身を含む): 281346048

約数和(自身を除く): 69674357

約数列:

[1, 7, 11, 23, 47, 77, 161, 253, 329, 517, 1081, 1771, 2543, 3619, 7567, 11891, 17801, 27973, 58489, 83237, 119521, 195811, 409423, 643379, 836647, 1314731, 2748983, 4503653, 9203117, 19242881, 30238813, 211671691]

約数ペア:

[(1, 211671691), (7, 30238813), (11, 19242881), (23, 9203117), (47, 4503653), (77, 2748983), (161, 1314731), (253, 836647), (329, 643379), (517, 409423), (1081, 195811), (1771, 119521), (2543, 83237), (3619, 58489), (7567, 27973), (11891, 17801)]