19865937

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1373}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 33239808

約数和(自身を除く): 13373871

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 159, 273, 371, 689, 1113, 1373, 2067, 4119, 4823, 9611, 14469, 17849, 28833, 53547, 72769, 124943, 218307, 374829, 509383, 945997, 1528149, 2837991, 6621979, 19865937]

約数ペア:

[(1, 19865937), (3, 6621979), (7, 2837991), (13, 1528149), (21, 945997), (39, 509383), (53, 374829), (91, 218307), (159, 124943), (273, 72769), (371, 53547), (689, 28833), (1113, 17849), (1373, 14469), (2067, 9611), (4119, 4823)]