89821025

素因数分解:

$5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 132134400

約数和(自身を除く): 42313375

約数列:

[1, 5, 7, 25, 35, 73, 79, 89, 175, 365, 395, 445, 511, 553, 623, 1825, 1975, 2225, 2555, 2765, 3115, 5767, 6497, 7031, 12775, 13825, 15575, 28835, 32485, 35155, 40369, 45479, 49217, 144175, 162425, 175775, 201845, 227395, 246085, 513263, 1009225, 1136975, 1230425, 2566315, 3592841, 12831575, 17964205, 89821025]

約数ペア:

[(1, 89821025), (5, 17964205), (7, 12831575), (25, 3592841), (35, 2566315), (73, 1230425), (79, 1136975), (89, 1009225), (175, 513263), (365, 246085), (395, 227395), (445, 201845), (511, 175775), (553, 162425), (623, 144175), (1825, 49217), (1975, 45479), (2225, 40369), (2555, 35155), (2765, 32485), (3115, 28835), (5767, 15575), (6497, 13825), (7031, 12775)]