405392000

素因数分解:

$2^7\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1949}}^1$

素因数の和:1991

約数の個数: 128

約数和(自身を含む): 1085994000

約数和(自身を除く): 680602000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 125, 128, 130, 160, 200, 208, 250, 260, 320, 325, 400, 416, 500, 520, 640, 650, 800, 832, 1000, 1040, 1300, 1600, 1625, 1664, 1949, 2000, 2080, 2600, 3200, 3250, 3898, 4000, 4160, 5200, 6500, 7796, 8000, 8320, 9745, 10400, 13000, 15592, 16000, 19490, 20800, 25337, 26000, 31184, 38980, 41600, 48725, 50674, 52000, 62368, 77960, 97450, 101348, 104000, 124736, 126685, 155920, 194900, 202696, 208000, 243625, 249472, 253370, 311840, 389800, 405392, 487250, 506740, 623680, 633425, 779600, 810784, 974500, 1013480, 1247360, 1266850, 1559200, 1621568, 1949000, 2026960, 2533700, 3118400, 3167125, 3243136, 3898000, 4053920, 5067400, 6236800, 6334250, 7796000, 8107840, 10134800, 12668500, 15592000, 16215680, 20269600, 25337000, 31184000, 40539200, 50674000, 81078400, 101348000, 202696000, 405392000]

約数ペア:

[(1, 405392000), (2, 202696000), (4, 101348000), (5, 81078400), (8, 50674000), (10, 40539200), (13, 31184000), (16, 25337000), (20, 20269600), (25, 16215680), (26, 15592000), (32, 12668500), (40, 10134800), (50, 8107840), (52, 7796000), (64, 6334250), (65, 6236800), (80, 5067400), (100, 4053920), (104, 3898000), (125, 3243136), (128, 3167125), (130, 3118400), (160, 2533700), (200, 2026960), (208, 1949000), (250, 1621568), (260, 1559200), (320, 1266850), (325, 1247360), (400, 1013480), (416, 974500), (500, 810784), (520, 779600), (640, 633425), (650, 623680), (800, 506740), (832, 487250), (1000, 405392), (1040, 389800), (1300, 311840), (1600, 253370), (1625, 249472), (1664, 243625), (1949, 208000), (2000, 202696), (2080, 194900), (2600, 155920), (3200, 126685), (3250, 124736), (3898, 104000), (4000, 101348), (4160, 97450), (5200, 77960), (6500, 62368), (7796, 52000), (8000, 50674), (8320, 48725), (9745, 41600), (10400, 38980), (13000, 31184), (15592, 26000), (16000, 25337), (19490, 20800)]