678368542

素因数分解:

$2^1\times {\mathrm{389}}^1\times {\mathrm{419}}^1\times {\mathrm{2081}}^1$

素因数の和:2891

約数の個数: 16

約数和(自身を含む): 1023094800

約数和(自身を除く): 344726258

約数列:

[1, 2, 389, 419, 778, 838, 2081, 4162, 162991, 325982, 809509, 871939, 1619018, 1743878, 339184271, 678368542]

約数ペア:

[(1, 678368542), (2, 339184271), (389, 1743878), (419, 1619018), (778, 871939), (838, 809509), (2081, 325982), (4162, 162991)]