2100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1$

素因数の和:24

約数の個数: 36

約数和(自身を含む): 6944

約数和(自身を除く): 4844

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100]

約数ペア:

[(1, 2100), (2, 1050), (3, 700), (4, 525), (5, 420), (6, 350), (7, 300), (10, 210), (12, 175), (14, 150), (15, 140), (20, 105), (21, 100), (25, 84), (28, 75), (30, 70), (35, 60), (42, 50)]