19187847

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:849

約数の個数: 40

約数和(自身を含む): 33562496

約数和(自身を除く): 14374649

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 787, 903, 1161, 2361, 2709, 3483, 5509, 7083, 8127, 16527, 21249, 24381, 33841, 49581, 63747, 101523, 148743, 236887, 304569, 446229, 710661, 913707, 2131983, 2741121, 6395949, 19187847]

約数ペア:

[(1, 19187847), (3, 6395949), (7, 2741121), (9, 2131983), (21, 913707), (27, 710661), (43, 446229), (63, 304569), (81, 236887), (129, 148743), (189, 101523), (301, 63747), (387, 49581), (567, 33841), (787, 24381), (903, 21249), (1161, 16527), (2361, 8127), (2709, 7083), (3483, 5509)]