20755220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{283}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 46280640

約数和(自身を除く): 25525420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 283, 380, 386, 566, 772, 965, 1132, 1415, 1930, 2830, 3667, 3860, 5377, 5660, 7334, 10754, 14668, 18335, 21508, 26885, 36670, 53770, 54619, 73340, 107540, 109238, 218476, 273095, 546190, 1037761, 1092380, 2075522, 4151044, 5188805, 10377610, 20755220]

約数ペア:

[(1, 20755220), (2, 10377610), (4, 5188805), (5, 4151044), (10, 2075522), (19, 1092380), (20, 1037761), (38, 546190), (76, 273095), (95, 218476), (190, 109238), (193, 107540), (283, 73340), (380, 54619), (386, 53770), (566, 36670), (772, 26885), (965, 21508), (1132, 18335), (1415, 14668), (1930, 10754), (2830, 7334), (3667, 5660), (3860, 5377)]