21226557

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 33035904

約数和(自身を除く): 11809347

約数列:

[1, 3, 11, 17, 33, 51, 157, 187, 241, 471, 561, 723, 1727, 2651, 2669, 4097, 5181, 7953, 8007, 12291, 29359, 37837, 45067, 88077, 113511, 135201, 416207, 643229, 1248621, 1929687, 7075519, 21226557]

約数ペア:

[(1, 21226557), (3, 7075519), (11, 1929687), (17, 1248621), (33, 643229), (51, 416207), (157, 135201), (187, 113511), (241, 88077), (471, 45067), (561, 37837), (723, 29359), (1727, 12291), (2651, 8007), (2669, 7953), (4097, 5181)]