156621280

素因数分解:

$2^5\times 5^1\times {\mathrm{978883}}^1$

素因数の和:978898

約数の個数: 24

約数和(自身を含む): 370018152

約数和(自身を除く): 213396872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 978883, 1957766, 3915532, 4894415, 7831064, 9788830, 15662128, 19577660, 31324256, 39155320, 78310640, 156621280]

約数ペア:

[(1, 156621280), (2, 78310640), (4, 39155320), (5, 31324256), (8, 19577660), (10, 15662128), (16, 9788830), (20, 7831064), (32, 4894415), (40, 3915532), (80, 1957766), (160, 978883)]