10891270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 21268800

約数和(自身を除く): 10377530

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 421, 842, 995, 1990, 2105, 2587, 4210, 5174, 5473, 10946, 12935, 25870, 27365, 54730, 83779, 167558, 418895, 837790, 1089127, 2178254, 5445635, 10891270]

約数ペア:

[(1, 10891270), (2, 5445635), (5, 2178254), (10, 1089127), (13, 837790), (26, 418895), (65, 167558), (130, 83779), (199, 54730), (398, 27365), (421, 25870), (842, 12935), (995, 10946), (1990, 5473), (2105, 5174), (2587, 4210)]