28905513

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{937}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 47905536

約数和(自身を除く): 19000023

約数列:

[1, 3, 7, 13, 21, 39, 91, 113, 273, 339, 791, 937, 1469, 2373, 2811, 4407, 6559, 10283, 12181, 19677, 30849, 36543, 85267, 105881, 255801, 317643, 741167, 1376453, 2223501, 4129359, 9635171, 28905513]

約数ペア:

[(1, 28905513), (3, 9635171), (7, 4129359), (13, 2223501), (21, 1376453), (39, 741167), (91, 317643), (113, 255801), (273, 105881), (339, 85267), (791, 36543), (937, 30849), (1469, 19677), (2373, 12181), (2811, 10283), (4407, 6559)]