20298160

素因数分解:

$2^4\times 5^1\times {\mathrm{487}}^1\times {\mathrm{521}}^1$

素因数の和:1021

約数の個数: 40

約数和(自身を含む): 47380896

約数和(自身を除く): 27082736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 487, 521, 974, 1042, 1948, 2084, 2435, 2605, 3896, 4168, 4870, 5210, 7792, 8336, 9740, 10420, 19480, 20840, 38960, 41680, 253727, 507454, 1014908, 1268635, 2029816, 2537270, 4059632, 5074540, 10149080, 20298160]

約数ペア:

[(1, 20298160), (2, 10149080), (4, 5074540), (5, 4059632), (8, 2537270), (10, 2029816), (16, 1268635), (20, 1014908), (40, 507454), (80, 253727), (487, 41680), (521, 38960), (974, 20840), (1042, 19480), (1948, 10420), (2084, 9740), (2435, 8336), (2605, 7792), (3896, 5210), (4168, 4870)]