1780821460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1\times {\mathrm{997}}^1$

素因数の和:1393

約数の個数: 96

約数和(自身を含む): 4273420032

約数和(自身を除く): 2492598572

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 353, 460, 506, 706, 997, 1012, 1265, 1412, 1765, 1994, 2530, 3530, 3883, 3988, 4985, 5060, 7060, 7766, 8119, 9970, 10967, 15532, 16238, 19415, 19940, 21934, 22931, 32476, 38830, 40595, 43868, 45862, 54835, 77660, 81190, 89309, 91724, 109670, 114655, 162380, 178618, 219340, 229310, 252241, 351941, 357236, 446545, 458620, 504482, 703882, 893090, 1008964, 1261205, 1407764, 1759705, 1786180, 2522410, 3519410, 3871351, 5044820, 7038820, 7742702, 8094643, 15485404, 16189286, 19356755, 32378572, 38713510, 40473215, 77427020, 80946430, 89041073, 161892860, 178082146, 356164292, 445205365, 890410730, 1780821460]

約数ペア:

[(1, 1780821460), (2, 890410730), (4, 445205365), (5, 356164292), (10, 178082146), (11, 161892860), (20, 89041073), (22, 80946430), (23, 77427020), (44, 40473215), (46, 38713510), (55, 32378572), (92, 19356755), (110, 16189286), (115, 15485404), (220, 8094643), (230, 7742702), (253, 7038820), (353, 5044820), (460, 3871351), (506, 3519410), (706, 2522410), (997, 1786180), (1012, 1759705), (1265, 1407764), (1412, 1261205), (1765, 1008964), (1994, 893090), (2530, 703882), (3530, 504482), (3883, 458620), (3988, 446545), (4985, 357236), (5060, 351941), (7060, 252241), (7766, 229310), (8119, 219340), (9970, 178618), (10967, 162380), (15532, 114655), (16238, 109670), (19415, 91724), (19940, 89309), (21934, 81190), (22931, 77660), (32476, 54835), (38830, 45862), (40595, 43868)]