19902381

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{2221}}^1$

素因数の和:2356

約数の個数: 16

約数和(自身を含む): 27730560

約数和(自身を除く): 7828179

約数列:

[1, 3, 29, 87, 103, 309, 2221, 2987, 6663, 8961, 64409, 193227, 228763, 686289, 6634127, 19902381]

約数ペア:

[(1, 19902381), (3, 6634127), (29, 686289), (87, 228763), (103, 193227), (309, 64409), (2221, 8961), (2987, 6663)]