21497028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{255917}}^1$

素因数の和:255931

約数の個数: 24

約数和(自身を含む): 57325632

約数和(自身を除く): 35828604

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 255917, 511834, 767751, 1023668, 1535502, 1791419, 3071004, 3582838, 5374257, 7165676, 10748514, 21497028]

約数ペア:

[(1, 21497028), (2, 10748514), (3, 7165676), (4, 5374257), (6, 3582838), (7, 3071004), (12, 1791419), (14, 1535502), (21, 1023668), (28, 767751), (42, 511834), (84, 255917)]