21795200

素因数分解:

$2^7\times 5^2\times 7^2\times {\mathrm{139}}^1$

素因数の和:177

約数の個数: 144

約数和(自身を含む): 63081900

約数和(自身を除く): 41286700

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 128, 139, 140, 160, 175, 196, 200, 224, 245, 278, 280, 320, 350, 392, 400, 448, 490, 556, 560, 640, 695, 700, 784, 800, 896, 973, 980, 1112, 1120, 1225, 1390, 1400, 1568, 1600, 1946, 1960, 2224, 2240, 2450, 2780, 2800, 3136, 3200, 3475, 3892, 3920, 4448, 4480, 4865, 4900, 5560, 5600, 6272, 6811, 6950, 7784, 7840, 8896, 9730, 9800, 11120, 11200, 13622, 13900, 15568, 15680, 17792, 19460, 19600, 22240, 22400, 24325, 27244, 27800, 31136, 31360, 34055, 38920, 39200, 44480, 48650, 54488, 55600, 62272, 68110, 77840, 78400, 88960, 97300, 108976, 111200, 124544, 136220, 155680, 156800, 170275, 194600, 217952, 222400, 272440, 311360, 340550, 389200, 435904, 444800, 544880, 622720, 681100, 778400, 871808, 1089760, 1362200, 1556800, 2179520, 2724400, 3113600, 4359040, 5448800, 10897600, 21795200]

約数ペア:

[(1, 21795200), (2, 10897600), (4, 5448800), (5, 4359040), (7, 3113600), (8, 2724400), (10, 2179520), (14, 1556800), (16, 1362200), (20, 1089760), (25, 871808), (28, 778400), (32, 681100), (35, 622720), (40, 544880), (49, 444800), (50, 435904), (56, 389200), (64, 340550), (70, 311360), (80, 272440), (98, 222400), (100, 217952), (112, 194600), (128, 170275), (139, 156800), (140, 155680), (160, 136220), (175, 124544), (196, 111200), (200, 108976), (224, 97300), (245, 88960), (278, 78400), (280, 77840), (320, 68110), (350, 62272), (392, 55600), (400, 54488), (448, 48650), (490, 44480), (556, 39200), (560, 38920), (640, 34055), (695, 31360), (700, 31136), (784, 27800), (800, 27244), (896, 24325), (973, 22400), (980, 22240), (1112, 19600), (1120, 19460), (1225, 17792), (1390, 15680), (1400, 15568), (1568, 13900), (1600, 13622), (1946, 11200), (1960, 11120), (2224, 9800), (2240, 9730), (2450, 8896), (2780, 7840), (2800, 7784), (3136, 6950), (3200, 6811), (3475, 6272), (3892, 5600), (3920, 5560), (4448, 4900), (4480, 4865)]