81225440

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7577}}^1$

素因数の和:7659

約数の個数: 48

約数和(自身を含む): 194784912

約数和(自身を除く): 113559472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 2144, 2680, 5360, 7577, 10720, 15154, 30308, 37885, 60616, 75770, 121232, 151540, 242464, 303080, 507659, 606160, 1015318, 1212320, 2030636, 2538295, 4061272, 5076590, 8122544, 10153180, 16245088, 20306360, 40612720, 81225440]

約数ペア:

[(1, 81225440), (2, 40612720), (4, 20306360), (5, 16245088), (8, 10153180), (10, 8122544), (16, 5076590), (20, 4061272), (32, 2538295), (40, 2030636), (67, 1212320), (80, 1015318), (134, 606160), (160, 507659), (268, 303080), (335, 242464), (536, 151540), (670, 121232), (1072, 75770), (1340, 60616), (2144, 37885), (2680, 30308), (5360, 15154), (7577, 10720)]