1285504780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{213539}}^1$

素因数の和:213598

約数の個数: 48

約数和(自身を含む): 3156975360

約数和(自身を除く): 1871470580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 6020, 213539, 427078, 854156, 1067695, 1494773, 2135390, 2989546, 4270780, 5979092, 7473865, 9182177, 14947730, 18364354, 29895460, 36728708, 45910885, 64275239, 91821770, 128550478, 183643540, 257100956, 321376195, 642752390, 1285504780]

約数ペア:

[(1, 1285504780), (2, 642752390), (4, 321376195), (5, 257100956), (7, 183643540), (10, 128550478), (14, 91821770), (20, 64275239), (28, 45910885), (35, 36728708), (43, 29895460), (70, 18364354), (86, 14947730), (140, 9182177), (172, 7473865), (215, 5979092), (301, 4270780), (430, 2989546), (602, 2135390), (860, 1494773), (1204, 1067695), (1505, 854156), (3010, 427078), (6020, 213539)]