18087813

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{251}}^1$

素因数の和:434

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 10579707

約数列:

[1, 3, 9, 17, 27, 51, 153, 157, 251, 459, 471, 753, 1413, 2259, 2669, 4239, 4267, 6777, 8007, 12801, 24021, 38403, 39407, 72063, 115209, 118221, 354663, 669919, 1063989, 2009757, 6029271, 18087813]

約数ペア:

[(1, 18087813), (3, 6029271), (9, 2009757), (17, 1063989), (27, 669919), (51, 354663), (153, 118221), (157, 115209), (251, 72063), (459, 39407), (471, 38403), (753, 24021), (1413, 12801), (2259, 8007), (2669, 6777), (4239, 4267)]