21778850015

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{1982599}}^1$

素因数の和:1982643

約数の個数: 16

約数和(自身を含む): 28311528000

約数和(自身を除く): 6532677985

約数列:

[1, 5, 13, 65, 169, 845, 2197, 10985, 1982599, 9912995, 25773787, 128868935, 335059231, 1675296155, 4355770003, 21778850015]

約数ペア:

[(1, 21778850015), (5, 4355770003), (13, 1675296155), (65, 335059231), (169, 128868935), (845, 25773787), (2197, 9912995), (10985, 1982599)]