21399068

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{193}}^1\times {\mathrm{523}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 38425968

約数和(自身を除く): 17026900

約数列:

[1, 2, 4, 53, 106, 193, 212, 386, 523, 772, 1046, 2092, 10229, 20458, 27719, 40916, 55438, 100939, 110876, 201878, 403756, 5349767, 10699534, 21399068]

約数ペア:

[(1, 21399068), (2, 10699534), (4, 5349767), (53, 403756), (106, 201878), (193, 110876), (212, 100939), (386, 55438), (523, 40916), (772, 27719), (1046, 20458), (2092, 10229)]