8408820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{20021}}^1$

素因数の和:20040

約数の個数: 48

約数和(自身を含む): 26909568

約数和(自身を除く): 18500748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 20021, 40042, 60063, 80084, 100105, 120126, 140147, 200210, 240252, 280294, 300315, 400420, 420441, 560588, 600630, 700735, 840882, 1201260, 1401470, 1681764, 2102205, 2802940, 4204410, 8408820]

約数ペア:

[(1, 8408820), (2, 4204410), (3, 2802940), (4, 2102205), (5, 1681764), (6, 1401470), (7, 1201260), (10, 840882), (12, 700735), (14, 600630), (15, 560588), (20, 420441), (21, 400420), (28, 300315), (30, 280294), (35, 240252), (42, 200210), (60, 140147), (70, 120126), (84, 100105), (105, 80084), (140, 60063), (210, 40042), (420, 20021)]