6478820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7901}}^1$

素因数の和:7951

約数の個数: 24

約数和(自身を含む): 13939128

約数和(自身を除く): 7460308

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 7901, 15802, 31604, 39505, 79010, 158020, 323941, 647882, 1295764, 1619705, 3239410, 6478820]

約数ペア:

[(1, 6478820), (2, 3239410), (4, 1619705), (5, 1295764), (10, 647882), (20, 323941), (41, 158020), (82, 79010), (164, 39505), (205, 31604), (410, 15802), (820, 7901)]