20485563

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6547}}^1$

素因数の和:6706

約数の個数: 16

約数和(自身を含む): 31430400

約数和(自身を除く): 10944837

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6547, 19641, 45829, 137487, 975503, 2926509, 6828521, 20485563]

約数ペア:

[(1, 20485563), (3, 6828521), (7, 2926509), (21, 975503), (149, 137487), (447, 45829), (1043, 19641), (3129, 6547)]