8140780

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{829}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 17151120

約数和(自身を除く): 9010340

約数列:

[1, 2, 4, 5, 10, 20, 491, 829, 982, 1658, 1964, 2455, 3316, 4145, 4910, 8290, 9820, 16580, 407039, 814078, 1628156, 2035195, 4070390, 8140780]

約数ペア:

[(1, 8140780), (2, 4070390), (4, 2035195), (5, 1628156), (10, 814078), (20, 407039), (491, 16580), (829, 9820), (982, 8290), (1658, 4910), (1964, 4145), (2455, 3316)]