21387692

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{347}}^1\times {\mathrm{811}}^1$

素因数の和:1181

約数の個数: 24

約数和(自身を含む): 39560640

約数和(自身を除く): 18172948

約数列:

[1, 2, 4, 19, 38, 76, 347, 694, 811, 1388, 1622, 3244, 6593, 13186, 15409, 26372, 30818, 61636, 281417, 562834, 1125668, 5346923, 10693846, 21387692]

約数ペア:

[(1, 21387692), (2, 10693846), (4, 5346923), (19, 1125668), (38, 562834), (76, 281417), (347, 61636), (694, 30818), (811, 26372), (1388, 15409), (1622, 13186), (3244, 6593)]