82421540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{401}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 178295040

約数和(自身を除く): 95873500

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 239, 401, 430, 478, 802, 860, 956, 1195, 1604, 2005, 2390, 4010, 4780, 8020, 10277, 17243, 20554, 34486, 41108, 51385, 68972, 86215, 95839, 102770, 172430, 191678, 205540, 344860, 383356, 479195, 958390, 1916780, 4121077, 8242154, 16484308, 20605385, 41210770, 82421540]

約数ペア:

[(1, 82421540), (2, 41210770), (4, 20605385), (5, 16484308), (10, 8242154), (20, 4121077), (43, 1916780), (86, 958390), (172, 479195), (215, 383356), (239, 344860), (401, 205540), (430, 191678), (478, 172430), (802, 102770), (860, 95839), (956, 86215), (1195, 68972), (1604, 51385), (2005, 41108), (2390, 34486), (4010, 20554), (4780, 17243), (8020, 10277)]