77960000

素因数分解:

$2^6\times 5^4\times {\mathrm{1949}}^1$

素因数の和:1981

約数の個数: 70

約数和(自身を含む): 193414650

約数和(自身を除く): 115454650

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 1000, 1250, 1600, 1949, 2000, 2500, 3898, 4000, 5000, 7796, 8000, 9745, 10000, 15592, 19490, 20000, 31184, 38980, 40000, 48725, 62368, 77960, 97450, 124736, 155920, 194900, 243625, 311840, 389800, 487250, 623680, 779600, 974500, 1218125, 1559200, 1949000, 2436250, 3118400, 3898000, 4872500, 7796000, 9745000, 15592000, 19490000, 38980000, 77960000]

約数ペア:

[(1, 77960000), (2, 38980000), (4, 19490000), (5, 15592000), (8, 9745000), (10, 7796000), (16, 4872500), (20, 3898000), (25, 3118400), (32, 2436250), (40, 1949000), (50, 1559200), (64, 1218125), (80, 974500), (100, 779600), (125, 623680), (160, 487250), (200, 389800), (250, 311840), (320, 243625), (400, 194900), (500, 155920), (625, 124736), (800, 97450), (1000, 77960), (1250, 62368), (1600, 48725), (1949, 40000), (2000, 38980), (2500, 31184), (3898, 20000), (4000, 19490), (5000, 15592), (7796, 10000), (8000, 9745)]