19982078

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1\times {\mathrm{1289}}^1$

素因数の和:1651

約数の個数: 16

約数和(自身を含む): 31393440

約数和(自身を除く): 11411362

約数列:

[1, 2, 23, 46, 337, 674, 1289, 2578, 7751, 15502, 29647, 59294, 434393, 868786, 9991039, 19982078]

約数ペア:

[(1, 19982078), (2, 9991039), (23, 868786), (46, 434393), (337, 59294), (674, 29647), (1289, 15502), (2578, 7751)]