16721860

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{12479}}^1$

素因数の和:12555

約数の個数: 24

約数和(自身を含む): 35642880

約数和(自身を除く): 18921020

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 12479, 24958, 49916, 62395, 124790, 249580, 836093, 1672186, 3344372, 4180465, 8360930, 16721860]

約数ペア:

[(1, 16721860), (2, 8360930), (4, 4180465), (5, 3344372), (10, 1672186), (20, 836093), (67, 249580), (134, 124790), (268, 62395), (335, 49916), (670, 24958), (1340, 12479)]