20885319

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3643}}^1$

素因数の和:3676

約数の個数: 36

約数和(自身を含む): 37802856

約数和(自身を除く): 16917537

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3643, 5733, 10929, 25501, 32787, 47359, 76503, 142077, 178507, 229509, 331513, 426231, 535521, 994539, 1606563, 2320591, 2983617, 6961773, 20885319]

約数ペア:

[(1, 20885319), (3, 6961773), (7, 2983617), (9, 2320591), (13, 1606563), (21, 994539), (39, 535521), (49, 426231), (63, 331513), (91, 229509), (117, 178507), (147, 142077), (273, 76503), (441, 47359), (637, 32787), (819, 25501), (1911, 10929), (3643, 5733)]