21359515

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{7753}}^1$

素因数の和:7806

約数の個数: 16

約数和(自身を含む): 27914400

約数和(自身を除く): 6554885

約数列:

[1, 5, 19, 29, 95, 145, 551, 2755, 7753, 38765, 147307, 224837, 736535, 1124185, 4271903, 21359515]

約数ペア:

[(1, 21359515), (5, 4271903), (19, 1124185), (29, 736535), (95, 224837), (145, 147307), (551, 38765), (2755, 7753)]