81514240

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1481}}^1$

素因数の和:1545

約数の個数: 72

約数和(自身を含む): 199927728

約数和(自身を除く): 118413488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 640, 688, 860, 1280, 1376, 1481, 1720, 2752, 2962, 3440, 5504, 5924, 6880, 7405, 11008, 11848, 13760, 14810, 23696, 27520, 29620, 47392, 55040, 59240, 63683, 94784, 118480, 127366, 189568, 236960, 254732, 318415, 379136, 473920, 509464, 636830, 947840, 1018928, 1273660, 1895680, 2037856, 2547320, 4075712, 5094640, 8151424, 10189280, 16302848, 20378560, 40757120, 81514240]

約数ペア:

[(1, 81514240), (2, 40757120), (4, 20378560), (5, 16302848), (8, 10189280), (10, 8151424), (16, 5094640), (20, 4075712), (32, 2547320), (40, 2037856), (43, 1895680), (64, 1273660), (80, 1018928), (86, 947840), (128, 636830), (160, 509464), (172, 473920), (215, 379136), (256, 318415), (320, 254732), (344, 236960), (430, 189568), (640, 127366), (688, 118480), (860, 94784), (1280, 63683), (1376, 59240), (1481, 55040), (1720, 47392), (2752, 29620), (2962, 27520), (3440, 23696), (5504, 14810), (5924, 13760), (6880, 11848), (7405, 11008)]