21934179

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 34056000

約数和(自身を除く): 12121821

約数列:

[1, 3, 9, 27, 29, 87, 109, 257, 261, 327, 771, 783, 981, 2313, 2943, 3161, 6939, 7453, 9483, 22359, 28013, 28449, 67077, 84039, 85347, 201231, 252117, 756351, 812377, 2437131, 7311393, 21934179]

約数ペア:

[(1, 21934179), (3, 7311393), (9, 2437131), (27, 812377), (29, 756351), (87, 252117), (109, 201231), (257, 85347), (261, 84039), (327, 67077), (771, 28449), (783, 28013), (981, 22359), (2313, 9483), (2943, 7453), (3161, 6939)]