20786549

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 26320896

約数和(自身を除く): 5534347

約数列:

[1, 7, 23, 41, 47, 67, 161, 287, 329, 469, 943, 1081, 1541, 1927, 2747, 3149, 6601, 7567, 10787, 13489, 19229, 22043, 44321, 63181, 72427, 129109, 310247, 442267, 506989, 903763, 2969507, 20786549]

約数ペア:

[(1, 20786549), (7, 2969507), (23, 903763), (41, 506989), (47, 442267), (67, 310247), (161, 129109), (287, 72427), (329, 63181), (469, 44321), (943, 22043), (1081, 19229), (1541, 13489), (1927, 10787), (2747, 7567), (3149, 6601)]