40581980

素因数分解:

$2^2\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{2011}}^1$

素因数の和:3029

約数の個数: 24

約数和(自身を含む): 85349040

約数和(自身を除く): 44767060

約数列:

[1, 2, 4, 5, 10, 20, 1009, 2011, 2018, 4022, 4036, 5045, 8044, 10055, 10090, 20110, 20180, 40220, 2029099, 4058198, 8116396, 10145495, 20290990, 40581980]

約数ペア:

[(1, 40581980), (2, 20290990), (4, 10145495), (5, 8116396), (10, 4058198), (20, 2029099), (1009, 40220), (2011, 20180), (2018, 20110), (4022, 10090), (4036, 10055), (5045, 8044)]