21112419

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{503}}^1\times {\mathrm{823}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 29901312

約数和(自身を除く): 8788893

約数列:

[1, 3, 17, 51, 503, 823, 1509, 2469, 8551, 13991, 25653, 41973, 413969, 1241907, 7037473, 21112419]

約数ペア:

[(1, 21112419), (3, 7037473), (17, 1241907), (51, 413969), (503, 41973), (823, 25653), (1509, 13991), (2469, 8551)]