20123120

素因数分解:

$2^4\times 5^1\times {\mathrm{251539}}^1$

素因数の和:251552

約数の個数: 20

約数和(自身を含む): 46786440

約数和(自身を除く): 26663320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251539, 503078, 1006156, 1257695, 2012312, 2515390, 4024624, 5030780, 10061560, 20123120]

約数ペア:

[(1, 20123120), (2, 10061560), (4, 5030780), (5, 4024624), (8, 2515390), (10, 2012312), (16, 1257695), (20, 1006156), (40, 503078), (80, 251539)]