256568340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{610877}}^1$

素因数の和:610896

約数の個数: 48

約数和(自身を含む): 821020032

約数和(自身を除く): 564451692

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, 610877, 1221754, 1832631, 2443508, 3054385, 3665262, 4276139, 6108770, 7330524, 8552278, 9163155, 12217540, 12828417, 17104556, 18326310, 21380695, 25656834, 36652620, 42761390, 51313668, 64142085, 85522780, 128284170, 256568340]

約数ペア:

[(1, 256568340), (2, 128284170), (3, 85522780), (4, 64142085), (5, 51313668), (6, 42761390), (7, 36652620), (10, 25656834), (12, 21380695), (14, 18326310), (15, 17104556), (20, 12828417), (21, 12217540), (28, 9163155), (30, 8552278), (35, 7330524), (42, 6108770), (60, 4276139), (70, 3665262), (84, 3054385), (105, 2443508), (140, 1832631), (210, 1221754), (420, 610877)]