20380458

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{3491}}^1$

素因数の和:3642

約数の個数: 32

約数和(自身を含む): 46932480

約数和(自身を除く): 26552022

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 139, 278, 417, 834, 973, 1946, 2919, 3491, 5838, 6982, 10473, 20946, 24437, 48874, 73311, 146622, 485249, 970498, 1455747, 2911494, 3396743, 6793486, 10190229, 20380458]

約数ペア:

[(1, 20380458), (2, 10190229), (3, 6793486), (6, 3396743), (7, 2911494), (14, 1455747), (21, 970498), (42, 485249), (139, 146622), (278, 73311), (417, 48874), (834, 24437), (973, 20946), (1946, 10473), (2919, 6982), (3491, 5838)]