20161821309

素因数分解:

$3^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1878839}}^1$

素因数の和:1878929

約数の個数: 24

約数和(自身を含む): 31699788480

約数和(自身を除く): 11537967171

約数列:

[1, 3, 7, 21, 49, 73, 147, 219, 511, 1533, 3577, 10731, 1878839, 5636517, 13151873, 39455619, 92063111, 137155247, 276189333, 411465741, 960086729, 2880260187, 6720607103, 20161821309]

約数ペア:

[(1, 20161821309), (3, 6720607103), (7, 2880260187), (21, 960086729), (49, 411465741), (73, 276189333), (147, 137155247), (219, 92063111), (511, 39455619), (1533, 13151873), (3577, 5636517), (10731, 1878839)]