21655040

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{769}}^1$

素因数の和:803

約数の個数: 80

約数和(自身を含む): 56715120

約数和(自身を除く): 35060080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 769, 880, 1280, 1408, 1538, 1760, 2560, 2816, 3076, 3520, 3845, 5632, 6152, 7040, 7690, 8459, 12304, 14080, 15380, 16918, 24608, 28160, 30760, 33836, 42295, 49216, 61520, 67672, 84590, 98432, 123040, 135344, 169180, 196864, 246080, 270688, 338360, 393728, 492160, 541376, 676720, 984320, 1082752, 1353440, 1968640, 2165504, 2706880, 4331008, 5413760, 10827520, 21655040]

約数ペア:

[(1, 21655040), (2, 10827520), (4, 5413760), (5, 4331008), (8, 2706880), (10, 2165504), (11, 1968640), (16, 1353440), (20, 1082752), (22, 984320), (32, 676720), (40, 541376), (44, 492160), (55, 393728), (64, 338360), (80, 270688), (88, 246080), (110, 196864), (128, 169180), (160, 135344), (176, 123040), (220, 98432), (256, 84590), (320, 67672), (352, 61520), (440, 49216), (512, 42295), (640, 33836), (704, 30760), (769, 28160), (880, 24608), (1280, 16918), (1408, 15380), (1538, 14080), (1760, 12304), (2560, 8459), (2816, 7690), (3076, 7040), (3520, 6152), (3845, 5632)]