16516880

素因数分解:

$2^4\times 5^1\times {\mathrm{206461}}^1$

素因数の和:206474

約数の個数: 20

約数和(自身を含む): 38401932

約数和(自身を除く): 21885052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 206461, 412922, 825844, 1032305, 1651688, 2064610, 3303376, 4129220, 8258440, 16516880]

約数ペア:

[(1, 16516880), (2, 8258440), (4, 4129220), (5, 3303376), (8, 2064610), (10, 1651688), (16, 1032305), (20, 825844), (40, 412922), (80, 206461)]