81518080

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{4549}}^1$

素因数の和:4579

約数の個数: 80

約数和(自身を含む): 223423200

約数和(自身を除く): 141905120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1280, 1792, 2240, 2560, 3584, 4480, 4549, 8960, 9098, 17920, 18196, 22745, 31843, 36392, 45490, 63686, 72784, 90980, 127372, 145568, 159215, 181960, 254744, 291136, 318430, 363920, 509488, 582272, 636860, 727840, 1018976, 1164544, 1273720, 1455680, 2037952, 2329088, 2547440, 2911360, 4075904, 5094880, 5822720, 8151808, 10189760, 11645440, 16303616, 20379520, 40759040, 81518080]

約数ペア:

[(1, 81518080), (2, 40759040), (4, 20379520), (5, 16303616), (7, 11645440), (8, 10189760), (10, 8151808), (14, 5822720), (16, 5094880), (20, 4075904), (28, 2911360), (32, 2547440), (35, 2329088), (40, 2037952), (56, 1455680), (64, 1273720), (70, 1164544), (80, 1018976), (112, 727840), (128, 636860), (140, 582272), (160, 509488), (224, 363920), (256, 318430), (280, 291136), (320, 254744), (448, 181960), (512, 159215), (560, 145568), (640, 127372), (896, 90980), (1120, 72784), (1280, 63686), (1792, 45490), (2240, 36392), (2560, 31843), (3584, 22745), (4480, 18196), (4549, 17920), (8960, 9098)]