19857591

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1907}}^1$

素因数の和:2015

約数の個数: 24

約数和(自身を含む): 31253040

約数和(自身を除く): 11395449

約数列:

[1, 3, 9, 13, 39, 89, 117, 267, 801, 1157, 1907, 3471, 5721, 10413, 17163, 24791, 74373, 169723, 223119, 509169, 1527507, 2206399, 6619197, 19857591]

約数ペア:

[(1, 19857591), (3, 6619197), (9, 2206399), (13, 1527507), (39, 509169), (89, 223119), (117, 169723), (267, 74373), (801, 24791), (1157, 17163), (1907, 10413), (3471, 5721)]