20847520

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4493}}^1$

素因数の和:4537

約数の個数: 48

約数和(自身を含む): 50961960

約数和(自身を除く): 30114440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4493, 4640, 8986, 17972, 22465, 35944, 44930, 71888, 89860, 130297, 143776, 179720, 260594, 359440, 521188, 651485, 718880, 1042376, 1302970, 2084752, 2605940, 4169504, 5211880, 10423760, 20847520]

約数ペア:

[(1, 20847520), (2, 10423760), (4, 5211880), (5, 4169504), (8, 2605940), (10, 2084752), (16, 1302970), (20, 1042376), (29, 718880), (32, 651485), (40, 521188), (58, 359440), (80, 260594), (116, 179720), (145, 143776), (160, 130297), (232, 89860), (290, 71888), (464, 44930), (580, 35944), (928, 22465), (1160, 17972), (2320, 8986), (4493, 4640)]