81078400

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1949}}^1$

素因数の和:1986

約数の個数: 96

約数和(自身を含む): 215806500

約数和(自身を除く): 134728100

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 260, 320, 325, 400, 416, 520, 640, 650, 800, 832, 1040, 1300, 1600, 1664, 1949, 2080, 2600, 3200, 3898, 4160, 5200, 7796, 8320, 9745, 10400, 15592, 19490, 20800, 25337, 31184, 38980, 41600, 48725, 50674, 62368, 77960, 97450, 101348, 124736, 126685, 155920, 194900, 202696, 249472, 253370, 311840, 389800, 405392, 506740, 623680, 633425, 779600, 810784, 1013480, 1247360, 1266850, 1559200, 1621568, 2026960, 2533700, 3118400, 3243136, 4053920, 5067400, 6236800, 8107840, 10134800, 16215680, 20269600, 40539200, 81078400]

約数ペア:

[(1, 81078400), (2, 40539200), (4, 20269600), (5, 16215680), (8, 10134800), (10, 8107840), (13, 6236800), (16, 5067400), (20, 4053920), (25, 3243136), (26, 3118400), (32, 2533700), (40, 2026960), (50, 1621568), (52, 1559200), (64, 1266850), (65, 1247360), (80, 1013480), (100, 810784), (104, 779600), (128, 633425), (130, 623680), (160, 506740), (200, 405392), (208, 389800), (260, 311840), (320, 253370), (325, 249472), (400, 202696), (416, 194900), (520, 155920), (640, 126685), (650, 124736), (800, 101348), (832, 97450), (1040, 77960), (1300, 62368), (1600, 50674), (1664, 48725), (1949, 41600), (2080, 38980), (2600, 31184), (3200, 25337), (3898, 20800), (4160, 19490), (5200, 15592), (7796, 10400), (8320, 9745)]