20840960

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1163}}^1$

素因数の和:1193

約数の個数: 80

約数和(自身を含む): 57157056

約数和(自身を除く): 36316096

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, 1163, 1280, 1792, 2240, 2326, 2560, 3584, 4480, 4652, 5815, 8141, 8960, 9304, 11630, 16282, 17920, 18608, 23260, 32564, 37216, 40705, 46520, 65128, 74432, 81410, 93040, 130256, 148864, 162820, 186080, 260512, 297728, 325640, 372160, 521024, 595456, 651280, 744320, 1042048, 1302560, 1488640, 2084096, 2605120, 2977280, 4168192, 5210240, 10420480, 20840960]

約数ペア:

[(1, 20840960), (2, 10420480), (4, 5210240), (5, 4168192), (7, 2977280), (8, 2605120), (10, 2084096), (14, 1488640), (16, 1302560), (20, 1042048), (28, 744320), (32, 651280), (35, 595456), (40, 521024), (56, 372160), (64, 325640), (70, 297728), (80, 260512), (112, 186080), (128, 162820), (140, 148864), (160, 130256), (224, 93040), (256, 81410), (280, 74432), (320, 65128), (448, 46520), (512, 40705), (560, 37216), (640, 32564), (896, 23260), (1120, 18608), (1163, 17920), (1280, 16282), (1792, 11630), (2240, 9304), (2326, 8960), (2560, 8141), (3584, 5815), (4480, 4652)]