18784745

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 27599616

約数和(自身を除く): 8814871

約数列:

[1, 5, 7, 17, 35, 85, 119, 131, 241, 595, 655, 917, 1205, 1687, 2227, 4097, 4585, 8435, 11135, 15589, 20485, 28679, 31571, 77945, 143395, 157855, 220997, 536707, 1104985, 2683535, 3756949, 18784745]

約数ペア:

[(1, 18784745), (5, 3756949), (7, 2683535), (17, 1104985), (35, 536707), (85, 220997), (119, 157855), (131, 143395), (241, 77945), (595, 31571), (655, 28679), (917, 20485), (1205, 15589), (1687, 11135), (2227, 8435), (4097, 4585)]