21304377

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:267

約数の個数: 40

約数和(自身を含む): 34073600

約数和(自身を除く): 12769223

約数列:

[1, 3, 9, 19, 27, 57, 81, 109, 127, 171, 327, 381, 513, 981, 1143, 1539, 2071, 2413, 2943, 3429, 6213, 7239, 8829, 10287, 13843, 18639, 21717, 41529, 55917, 65151, 124587, 167751, 195453, 263017, 373761, 789051, 1121283, 2367153, 7101459, 21304377]

約数ペア:

[(1, 21304377), (3, 7101459), (9, 2367153), (19, 1121283), (27, 789051), (57, 373761), (81, 263017), (109, 195453), (127, 167751), (171, 124587), (327, 65151), (381, 55917), (513, 41529), (981, 21717), (1143, 18639), (1539, 13843), (2071, 10287), (2413, 8829), (2943, 7239), (3429, 6213)]