21000317765

素因数分解:

$5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{3015121}}^1$

素因数の和:3015332

約数の個数: 16

約数和(自身を含む): 28945171200

約数和(自身を除く): 7944853435

約数列:

[1, 5, 7, 35, 199, 995, 1393, 6965, 3015121, 15075605, 21105847, 105529235, 600009079, 3000045395, 4200063553, 21000317765]

約数ペア:

[(1, 21000317765), (5, 4200063553), (7, 3000045395), (35, 600009079), (199, 105529235), (995, 21105847), (1393, 15075605), (6965, 3015121)]