390068540

素因数分解:

$2^2\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{18917}}^1$

素因数の和:19957

約数の個数: 24

約数和(自身を含む): 819981792

約数和(自身を除く): 429913252

約数列:

[1, 2, 4, 5, 10, 20, 1031, 2062, 4124, 5155, 10310, 18917, 20620, 37834, 75668, 94585, 189170, 378340, 19503427, 39006854, 78013708, 97517135, 195034270, 390068540]

約数ペア:

[(1, 390068540), (2, 195034270), (4, 97517135), (5, 78013708), (10, 39006854), (20, 19503427), (1031, 378340), (2062, 189170), (4124, 94585), (5155, 75668), (10310, 37834), (18917, 20620)]