399788170

素因数分解:

$2^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{87481}}^1$

素因数の和:87945

約数の個数: 16

約数和(自身を含む): 721201608

約数和(自身を除く): 321413438

約数列:

[1, 2, 5, 10, 457, 914, 2285, 4570, 87481, 174962, 437405, 874810, 39978817, 79957634, 199894085, 399788170]

約数ペア:

[(1, 399788170), (2, 199894085), (5, 79957634), (10, 39978817), (457, 874810), (914, 437405), (2285, 174962), (4570, 87481)]