20709891

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 11392509

約数列:

[1, 3, 9, 27, 31, 93, 109, 227, 279, 327, 681, 837, 981, 2043, 2943, 3379, 6129, 7037, 10137, 21111, 24743, 30411, 63333, 74229, 91233, 189999, 222687, 668061, 767033, 2301099, 6903297, 20709891]

約数ペア:

[(1, 20709891), (3, 6903297), (9, 2301099), (27, 767033), (31, 668061), (93, 222687), (109, 189999), (227, 91233), (279, 74229), (327, 63333), (681, 30411), (837, 24743), (981, 21111), (2043, 10137), (2943, 7037), (3379, 6129)]