21707045275

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{10990909}}^1$

素因数の和:10990998

約数の個数: 12

約数和(自身を含む): 27257456800

約数和(自身を除く): 5550411525

約数列:

[1, 5, 25, 79, 395, 1975, 10990909, 54954545, 274772725, 868281811, 4341409055, 21707045275]

約数ペア:

[(1, 21707045275), (5, 4341409055), (25, 868281811), (79, 274772725), (395, 54954545), (1975, 10990909)]