20357540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20773}}^1$

素因数の和:20796

約数の個数: 36

約数和(自身を含む): 49732956

約数和(自身を除く): 29375416

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20773, 41546, 83092, 103865, 145411, 207730, 290822, 415460, 581644, 727055, 1017877, 1454110, 2035754, 2908220, 4071508, 5089385, 10178770, 20357540]

約数ペア:

[(1, 20357540), (2, 10178770), (4, 5089385), (5, 4071508), (7, 2908220), (10, 2035754), (14, 1454110), (20, 1017877), (28, 727055), (35, 581644), (49, 415460), (70, 290822), (98, 207730), (140, 145411), (196, 103865), (245, 83092), (490, 41546), (980, 20773)]