816402920

素因数分解:

$2^3\times 5^1\times {\mathrm{20410073}}^1$

素因数の和:20410084

約数の個数: 16

約数和(自身を含む): 1836906660

約数和(自身を除く): 1020503740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 20410073, 40820146, 81640292, 102050365, 163280584, 204100730, 408201460, 816402920]

約数ペア:

[(1, 816402920), (2, 408201460), (4, 204100730), (5, 163280584), (8, 102050365), (10, 81640292), (20, 40820146), (40, 20410073)]