51128800

素因数分解:

$2^5\times 5^2\times {\mathrm{79}}^1\times {\mathrm{809}}^1$

素因数の和:908

約数の個数: 72

約数和(自身を含む): 126554400

約数和(自身を除く): 75425600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 79, 80, 100, 158, 160, 200, 316, 395, 400, 632, 790, 800, 809, 1264, 1580, 1618, 1975, 2528, 3160, 3236, 3950, 4045, 6320, 6472, 7900, 8090, 12640, 12944, 15800, 16180, 20225, 25888, 31600, 32360, 40450, 63200, 63911, 64720, 80900, 127822, 129440, 161800, 255644, 319555, 323600, 511288, 639110, 647200, 1022576, 1278220, 1597775, 2045152, 2556440, 3195550, 5112880, 6391100, 10225760, 12782200, 25564400, 51128800]

約数ペア:

[(1, 51128800), (2, 25564400), (4, 12782200), (5, 10225760), (8, 6391100), (10, 5112880), (16, 3195550), (20, 2556440), (25, 2045152), (32, 1597775), (40, 1278220), (50, 1022576), (79, 647200), (80, 639110), (100, 511288), (158, 323600), (160, 319555), (200, 255644), (316, 161800), (395, 129440), (400, 127822), (632, 80900), (790, 64720), (800, 63911), (809, 63200), (1264, 40450), (1580, 32360), (1618, 31600), (1975, 25888), (2528, 20225), (3160, 16180), (3236, 15800), (3950, 12944), (4045, 12640), (6320, 8090), (6472, 7900)]