19971958

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{5231}}^1$

素因数の和:5339

約数の個数: 16

約数和(自身を含む): 31643136

約数和(自身を除く): 11671178

約数列:

[1, 2, 23, 46, 83, 166, 1909, 3818, 5231, 10462, 120313, 240626, 434173, 868346, 9985979, 19971958]

約数ペア:

[(1, 19971958), (2, 9985979), (23, 868346), (46, 434173), (83, 240626), (166, 120313), (1909, 10462), (3818, 5231)]