19872021

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1\times {\mathrm{1013}}^1$

素因数の和:1532

約数の個数: 16

約数和(自身を含む): 28619136

約数和(自身を除く): 8747115

約数列:

[1, 3, 13, 39, 503, 1013, 1509, 3039, 6539, 13169, 19617, 39507, 509539, 1528617, 6624007, 19872021]

約数ペア:

[(1, 19872021), (3, 6624007), (13, 1528617), (39, 509539), (503, 39507), (1013, 19617), (1509, 13169), (3039, 6539)]