20981708

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{1697}}^1$

素因数の和:1993

約数の個数: 24

約数和(自身を含む): 40222224

約数和(自身を除く): 19240516

約数列:

[1, 2, 4, 11, 22, 44, 281, 562, 1124, 1697, 3091, 3394, 6182, 6788, 12364, 18667, 37334, 74668, 476857, 953714, 1907428, 5245427, 10490854, 20981708]

約数ペア:

[(1, 20981708), (2, 10490854), (4, 5245427), (11, 1907428), (22, 953714), (44, 476857), (281, 74668), (562, 37334), (1124, 18667), (1697, 12364), (3091, 6788), (3394, 6182)]