19729745

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{24509}}^1$

素因数の和:24544

約数の個数: 16

約数和(自身を含む): 28235520

約数和(自身を除く): 8505775

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 24509, 122545, 171563, 563707, 857815, 2818535, 3945949, 19729745]

約数ペア:

[(1, 19729745), (5, 3945949), (7, 2818535), (23, 857815), (35, 563707), (115, 171563), (161, 122545), (805, 24509)]