81823760

素因数分解:

$2^4\times 5^1\times {\mathrm{1022797}}^1$

素因数の和:1022810

約数の個数: 20

約数和(自身を含む): 190240428

約数和(自身を除く): 108416668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1022797, 2045594, 4091188, 5113985, 8182376, 10227970, 16364752, 20455940, 40911880, 81823760]

約数ペア:

[(1, 81823760), (2, 40911880), (4, 20455940), (5, 16364752), (8, 10227970), (10, 8182376), (16, 5113985), (20, 4091188), (40, 2045594), (80, 1022797)]