21577648

素因数分解:

$2^4\times {\mathrm{809}}^1\times {\mathrm{1667}}^1$

素因数の和:2484

約数の個数: 20

約数和(自身を含む): 41883480

約数和(自身を除く): 20305832

約数列:

[1, 2, 4, 8, 16, 809, 1618, 1667, 3236, 3334, 6472, 6668, 12944, 13336, 26672, 1348603, 2697206, 5394412, 10788824, 21577648]

約数ペア:

[(1, 21577648), (2, 10788824), (4, 5394412), (8, 2697206), (16, 1348603), (809, 26672), (1618, 13336), (1667, 12944), (3236, 6668), (3334, 6472)]