20940940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3623}}^1$

素因数の和:3666

約数の個数: 36

約数和(自身を含む): 46727856

約数和(自身を除く): 25786916

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3623, 5780, 7246, 14492, 18115, 36230, 61591, 72460, 123182, 246364, 307955, 615910, 1047047, 1231820, 2094094, 4188188, 5235235, 10470470, 20940940]

約数ペア:

[(1, 20940940), (2, 10470470), (4, 5235235), (5, 4188188), (10, 2094094), (17, 1231820), (20, 1047047), (34, 615910), (68, 307955), (85, 246364), (170, 123182), (289, 72460), (340, 61591), (578, 36230), (1156, 18115), (1445, 14492), (2890, 7246), (3623, 5780)]