8452780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{349}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 20462400

約数和(自身を除く): 12009620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 349, 692, 698, 865, 1211, 1396, 1730, 1745, 2422, 2443, 3460, 3490, 4844, 4886, 6055, 6980, 9772, 12110, 12215, 24220, 24430, 48860, 60377, 120754, 241508, 301885, 422639, 603770, 845278, 1207540, 1690556, 2113195, 4226390, 8452780]

約数ペア:

[(1, 8452780), (2, 4226390), (4, 2113195), (5, 1690556), (7, 1207540), (10, 845278), (14, 603770), (20, 422639), (28, 301885), (35, 241508), (70, 120754), (140, 60377), (173, 48860), (346, 24430), (349, 24220), (692, 12215), (698, 12110), (865, 9772), (1211, 6980), (1396, 6055), (1730, 4886), (1745, 4844), (2422, 3490), (2443, 3460)]