20609829

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 31680000

約数和(自身を除く): 11070171

約数列:

[1, 3, 9, 27, 47, 109, 141, 149, 327, 423, 447, 981, 1269, 1341, 2943, 4023, 5123, 7003, 15369, 16241, 21009, 46107, 48723, 63027, 138321, 146169, 189081, 438507, 763327, 2289981, 6869943, 20609829]

約数ペア:

[(1, 20609829), (3, 6869943), (9, 2289981), (27, 763327), (47, 438507), (109, 189081), (141, 146169), (149, 138321), (327, 63027), (423, 48723), (447, 46107), (981, 21009), (1269, 16241), (1341, 15369), (2943, 7003), (4023, 5123)]