20681276

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{809}}^1$

素因数の和:914

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25041604

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 83, 154, 166, 308, 332, 581, 809, 913, 1162, 1618, 1826, 2324, 3236, 3652, 5663, 6391, 8899, 11326, 12782, 17798, 22652, 25564, 35596, 62293, 67147, 124586, 134294, 249172, 268588, 470029, 738617, 940058, 1477234, 1880116, 2954468, 5170319, 10340638, 20681276]

約数ペア:

[(1, 20681276), (2, 10340638), (4, 5170319), (7, 2954468), (11, 1880116), (14, 1477234), (22, 940058), (28, 738617), (44, 470029), (77, 268588), (83, 249172), (154, 134294), (166, 124586), (308, 67147), (332, 62293), (581, 35596), (809, 25564), (913, 22652), (1162, 17798), (1618, 12782), (1826, 11326), (2324, 8899), (3236, 6391), (3652, 5663)]