38899990

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{9511}}^1$

素因数の和:9927

約数の個数: 16

約数和(自身を含む): 70198560

約数和(自身を除く): 31298570

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 9511, 19022, 47555, 95110, 3889999, 7779998, 19449995, 38899990]

約数ペア:

[(1, 38899990), (2, 19449995), (5, 7779998), (10, 3889999), (409, 95110), (818, 47555), (2045, 19022), (4090, 9511)]