278563971

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1753}}^1$

素因数の和:1840

約数の個数: 48

約数和(自身を含む): 460698624

約数和(自身を除く): 182134653

約数列:

[1, 3, 7, 21, 23, 47, 49, 69, 141, 147, 161, 329, 483, 987, 1081, 1127, 1753, 2303, 3243, 3381, 5259, 6909, 7567, 12271, 22701, 36813, 40319, 52969, 82391, 85897, 120957, 158907, 247173, 257691, 282233, 576737, 846699, 1730211, 1894993, 1975631, 4037159, 5684979, 5926893, 12111477, 13264951, 39794853, 92854657, 278563971]

約数ペア:

[(1, 278563971), (3, 92854657), (7, 39794853), (21, 13264951), (23, 12111477), (47, 5926893), (49, 5684979), (69, 4037159), (141, 1975631), (147, 1894993), (161, 1730211), (329, 846699), (483, 576737), (987, 282233), (1081, 257691), (1127, 247173), (1753, 158907), (2303, 120957), (3243, 85897), (3381, 82391), (5259, 52969), (6909, 40319), (7567, 36813), (12271, 22701)]