21287013

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{2699}}^1$

素因数の和:2952

約数の個数: 16

約数和(自身を含む): 31104000

約数和(自身を除く): 9816987

約数列:

[1, 3, 11, 33, 239, 717, 2629, 2699, 7887, 8097, 29689, 89067, 645061, 1935183, 7095671, 21287013]

約数ペア:

[(1, 21287013), (3, 7095671), (11, 1935183), (33, 645061), (239, 89067), (717, 29689), (2629, 8097), (2699, 7887)]