21678080

素因数分解:

$2^{11}\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 54545400

約数和(自身を除く): 32867320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 73, 80, 116, 128, 145, 146, 160, 232, 256, 290, 292, 320, 365, 464, 512, 580, 584, 640, 730, 928, 1024, 1160, 1168, 1280, 1460, 1856, 2048, 2117, 2320, 2336, 2560, 2920, 3712, 4234, 4640, 4672, 5120, 5840, 7424, 8468, 9280, 9344, 10240, 10585, 11680, 14848, 16936, 18560, 18688, 21170, 23360, 29696, 33872, 37120, 37376, 42340, 46720, 59392, 67744, 74240, 74752, 84680, 93440, 135488, 148480, 149504, 169360, 186880, 270976, 296960, 338720, 373760, 541952, 677440, 747520, 1083904, 1354880, 2167808, 2709760, 4335616, 5419520, 10839040, 21678080]

約数ペア:

[(1, 21678080), (2, 10839040), (4, 5419520), (5, 4335616), (8, 2709760), (10, 2167808), (16, 1354880), (20, 1083904), (29, 747520), (32, 677440), (40, 541952), (58, 373760), (64, 338720), (73, 296960), (80, 270976), (116, 186880), (128, 169360), (145, 149504), (146, 148480), (160, 135488), (232, 93440), (256, 84680), (290, 74752), (292, 74240), (320, 67744), (365, 59392), (464, 46720), (512, 42340), (580, 37376), (584, 37120), (640, 33872), (730, 29696), (928, 23360), (1024, 21170), (1160, 18688), (1168, 18560), (1280, 16936), (1460, 14848), (1856, 11680), (2048, 10585), (2117, 10240), (2320, 9344), (2336, 9280), (2560, 8468), (2920, 7424), (3712, 5840), (4234, 5120), (4640, 4672)]