21702520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77509}}^1$

素因数の和:77527

約数の個数: 32

約数和(自身を含む): 55807200

約数和(自身を除く): 34104680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77509, 155018, 310036, 387545, 542563, 620072, 775090, 1085126, 1550180, 2170252, 2712815, 3100360, 4340504, 5425630, 10851260, 21702520]

約数ペア:

[(1, 21702520), (2, 10851260), (4, 5425630), (5, 4340504), (7, 3100360), (8, 2712815), (10, 2170252), (14, 1550180), (20, 1085126), (28, 775090), (35, 620072), (40, 542563), (56, 387545), (70, 310036), (140, 155018), (280, 77509)]