1640005780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^2\times {\mathrm{5303}}^1$

素因数の和:5413

約数の個数: 72

約数和(自身を含む): 4022299008

約数和(自身を除く): 2382293228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 2209, 3290, 4418, 5303, 6580, 8836, 10606, 11045, 15463, 21212, 22090, 26515, 30926, 37121, 44180, 53030, 61852, 74242, 77315, 106060, 148484, 154630, 185605, 249241, 309260, 371210, 498482, 742420, 996964, 1246205, 1744687, 2492410, 3489374, 4984820, 6978748, 8723435, 11714327, 17446870, 23428654, 34893740, 46857308, 58571635, 82000289, 117143270, 164000578, 234286540, 328001156, 410001445, 820002890, 1640005780]

約数ペア:

[(1, 1640005780), (2, 820002890), (4, 410001445), (5, 328001156), (7, 234286540), (10, 164000578), (14, 117143270), (20, 82000289), (28, 58571635), (35, 46857308), (47, 34893740), (70, 23428654), (94, 17446870), (140, 11714327), (188, 8723435), (235, 6978748), (329, 4984820), (470, 3489374), (658, 2492410), (940, 1744687), (1316, 1246205), (1645, 996964), (2209, 742420), (3290, 498482), (4418, 371210), (5303, 309260), (6580, 249241), (8836, 185605), (10606, 154630), (11045, 148484), (15463, 106060), (21212, 77315), (22090, 74242), (26515, 61852), (30926, 53030), (37121, 44180)]