12801320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 33264000

約数和(自身を除く): 20462680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 131, 140, 262, 280, 349, 524, 655, 698, 917, 1048, 1310, 1396, 1745, 1834, 2443, 2620, 2792, 3490, 3668, 4585, 4886, 5240, 6980, 7336, 9170, 9772, 12215, 13960, 18340, 19544, 24430, 36680, 45719, 48860, 91438, 97720, 182876, 228595, 320033, 365752, 457190, 640066, 914380, 1280132, 1600165, 1828760, 2560264, 3200330, 6400660, 12801320]

約数ペア:

[(1, 12801320), (2, 6400660), (4, 3200330), (5, 2560264), (7, 1828760), (8, 1600165), (10, 1280132), (14, 914380), (20, 640066), (28, 457190), (35, 365752), (40, 320033), (56, 228595), (70, 182876), (131, 97720), (140, 91438), (262, 48860), (280, 45719), (349, 36680), (524, 24430), (655, 19544), (698, 18340), (917, 13960), (1048, 12215), (1310, 9772), (1396, 9170), (1745, 7336), (1834, 6980), (2443, 5240), (2620, 4886), (2792, 4585), (3490, 3668)]