20590780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21011}}^1$

素因数の和:21034

約数の個数: 36

約数和(自身を含む): 50302728

約数和(自身を除く): 29711948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21011, 42022, 84044, 105055, 147077, 210110, 294154, 420220, 588308, 735385, 1029539, 1470770, 2059078, 2941540, 4118156, 5147695, 10295390, 20590780]

約数ペア:

[(1, 20590780), (2, 10295390), (4, 5147695), (5, 4118156), (7, 2941540), (10, 2059078), (14, 1470770), (20, 1029539), (28, 735385), (35, 588308), (49, 420220), (70, 294154), (98, 210110), (140, 147077), (196, 105055), (245, 84044), (490, 42022), (980, 21011)]