21003016

素因数分解:

$2^3\times {\mathrm{491}}^1\times {\mathrm{5347}}^1$

素因数の和:5844

約数の個数: 16

約数和(自身を含む): 39468240

約数和(自身を除く): 18465224

約数列:

[1, 2, 4, 8, 491, 982, 1964, 3928, 5347, 10694, 21388, 42776, 2625377, 5250754, 10501508, 21003016]

約数ペア:

[(1, 21003016), (2, 10501508), (4, 5250754), (8, 2625377), (491, 42776), (982, 21388), (1964, 10694), (3928, 5347)]