20989476

素因数分解:

$2^2\times 3^3\times {\mathrm{109}}^1\times {\mathrm{1783}}^1$

素因数の和:1905

約数の個数: 48

約数和(自身を含む): 54947200

約数和(自身を除く): 33957724

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 109, 218, 327, 436, 654, 981, 1308, 1783, 1962, 2943, 3566, 3924, 5349, 5886, 7132, 10698, 11772, 16047, 21396, 32094, 48141, 64188, 96282, 192564, 194347, 388694, 583041, 777388, 1166082, 1749123, 2332164, 3498246, 5247369, 6996492, 10494738, 20989476]

約数ペア:

[(1, 20989476), (2, 10494738), (3, 6996492), (4, 5247369), (6, 3498246), (9, 2332164), (12, 1749123), (18, 1166082), (27, 777388), (36, 583041), (54, 388694), (108, 194347), (109, 192564), (218, 96282), (327, 64188), (436, 48141), (654, 32094), (981, 21396), (1308, 16047), (1783, 11772), (1962, 10698), (2943, 7132), (3566, 5886), (3924, 5349)]