20561280

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{10709}}^1$

素因数の和:10731

約数の個数: 64

約数和(自身を含む): 65545200

約数和(自身を除く): 44983920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 10709, 21418, 32127, 42836, 53545, 64254, 85672, 107090, 128508, 160635, 171344, 214180, 257016, 321270, 342688, 428360, 514032, 642540, 685376, 856720, 1028064, 1285080, 1370752, 1713440, 2056128, 2570160, 3426880, 4112256, 5140320, 6853760, 10280640, 20561280]

約数ペア:

[(1, 20561280), (2, 10280640), (3, 6853760), (4, 5140320), (5, 4112256), (6, 3426880), (8, 2570160), (10, 2056128), (12, 1713440), (15, 1370752), (16, 1285080), (20, 1028064), (24, 856720), (30, 685376), (32, 642540), (40, 514032), (48, 428360), (60, 342688), (64, 321270), (80, 257016), (96, 214180), (120, 171344), (128, 160635), (160, 128508), (192, 107090), (240, 85672), (320, 64254), (384, 53545), (480, 42836), (640, 32127), (960, 21418), (1920, 10709)]