19900011

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2749}}^1$

素因数の和:2898

約数の個数: 16

約数和(自身を含む): 28160000

約数和(自身を除く): 8259989

約数列:

[1, 3, 19, 57, 127, 381, 2413, 2749, 7239, 8247, 52231, 156693, 349123, 1047369, 6633337, 19900011]

約数ペア:

[(1, 19900011), (3, 6633337), (19, 1047369), (57, 349123), (127, 156693), (381, 52231), (2413, 8247), (2749, 7239)]