21605590

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35419}}^1$

素因数の和:35487

約数の個数: 16

約数和(自身を含む): 39528720

約数和(自身を除く): 17923130

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 35419, 70838, 177095, 354190, 2160559, 4321118, 10802795, 21605590]

約数ペア:

[(1, 21605590), (2, 10802795), (5, 4321118), (10, 2160559), (61, 354190), (122, 177095), (305, 70838), (610, 35419)]