78458800

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{4003}}^1$

素因数の和:4035

約数の個数: 90

約数和(自身を含む): 219327108

約数和(自身を除く): 140868308

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4003, 4900, 8006, 9800, 16012, 19600, 20015, 28021, 32024, 40030, 56042, 64048, 80060, 100075, 112084, 140105, 160120, 196147, 200150, 224168, 280210, 320240, 392294, 400300, 448336, 560420, 700525, 784588, 800600, 980735, 1120840, 1401050, 1569176, 1601200, 1961470, 2241680, 2802100, 3138352, 3922940, 4903675, 5604200, 7845880, 9807350, 11208400, 15691760, 19614700, 39229400, 78458800]

約数ペア:

[(1, 78458800), (2, 39229400), (4, 19614700), (5, 15691760), (7, 11208400), (8, 9807350), (10, 7845880), (14, 5604200), (16, 4903675), (20, 3922940), (25, 3138352), (28, 2802100), (35, 2241680), (40, 1961470), (49, 1601200), (50, 1569176), (56, 1401050), (70, 1120840), (80, 980735), (98, 800600), (100, 784588), (112, 700525), (140, 560420), (175, 448336), (196, 400300), (200, 392294), (245, 320240), (280, 280210), (350, 224168), (392, 200150), (400, 196147), (490, 160120), (560, 140105), (700, 112084), (784, 100075), (980, 80060), (1225, 64048), (1400, 56042), (1960, 40030), (2450, 32024), (2800, 28021), (3920, 20015), (4003, 19600), (4900, 16012), (8006, 9800)]