20490400

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{3659}}^1$

素因数の和:3686

約数の個数: 72

約数和(自身を含む): 57183840

約数和(自身を除く): 36693440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 140, 160, 175, 200, 224, 280, 350, 400, 560, 700, 800, 1120, 1400, 2800, 3659, 5600, 7318, 14636, 18295, 25613, 29272, 36590, 51226, 58544, 73180, 91475, 102452, 117088, 128065, 146360, 182950, 204904, 256130, 292720, 365900, 409808, 512260, 585440, 640325, 731800, 819616, 1024520, 1280650, 1463600, 2049040, 2561300, 2927200, 4098080, 5122600, 10245200, 20490400]

約数ペア:

[(1, 20490400), (2, 10245200), (4, 5122600), (5, 4098080), (7, 2927200), (8, 2561300), (10, 2049040), (14, 1463600), (16, 1280650), (20, 1024520), (25, 819616), (28, 731800), (32, 640325), (35, 585440), (40, 512260), (50, 409808), (56, 365900), (70, 292720), (80, 256130), (100, 204904), (112, 182950), (140, 146360), (160, 128065), (175, 117088), (200, 102452), (224, 91475), (280, 73180), (350, 58544), (400, 51226), (560, 36590), (700, 29272), (800, 25613), (1120, 18295), (1400, 14636), (2800, 7318), (3659, 5600)]