21114459

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:476

約数の個数: 32

約数和(自身を含む): 33445440

約数和(自身を除く): 12330981

約数列:

[1, 3, 9, 17, 27, 51, 153, 157, 293, 459, 471, 879, 1413, 2637, 2669, 4239, 4981, 7911, 8007, 14943, 24021, 44829, 46001, 72063, 134487, 138003, 414009, 782017, 1242027, 2346051, 7038153, 21114459]

約数ペア:

[(1, 21114459), (3, 7038153), (9, 2346051), (17, 1242027), (27, 782017), (51, 414009), (153, 138003), (157, 134487), (293, 72063), (459, 46001), (471, 44829), (879, 24021), (1413, 14943), (2637, 8007), (2669, 7911), (4239, 4981)]