19694745

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{6947}}^1$

素因数の和:6971

約数の個数: 40

約数和(自身を含む): 40353984

約数和(自身を除く): 20659239

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 6947, 20841, 34735, 48629, 62523, 104205, 145887, 187569, 243145, 312615, 437661, 562707, 729435, 937845, 1312983, 2188305, 2813535, 3938949, 6564915, 19694745]

約数ペア:

[(1, 19694745), (3, 6564915), (5, 3938949), (7, 2813535), (9, 2188305), (15, 1312983), (21, 937845), (27, 729435), (35, 562707), (45, 437661), (63, 312615), (81, 243145), (105, 187569), (135, 145887), (189, 104205), (315, 62523), (405, 48629), (567, 34735), (945, 20841), (2835, 6947)]