428820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1021}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 1373568

約数和(自身を除く): 944748

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, 1021, 2042, 3063, 4084, 5105, 6126, 7147, 10210, 12252, 14294, 15315, 20420, 21441, 28588, 30630, 35735, 42882, 61260, 71470, 85764, 107205, 142940, 214410, 428820]

約数ペア:

[(1, 428820), (2, 214410), (3, 142940), (4, 107205), (5, 85764), (6, 71470), (7, 61260), (10, 42882), (12, 35735), (14, 30630), (15, 28588), (20, 21441), (21, 20420), (28, 15315), (30, 14294), (35, 12252), (42, 10210), (60, 7147), (70, 6126), (84, 5105), (105, 4084), (140, 3063), (210, 2042), (420, 1021)]