51988400

素因数分解:

$2^4\times 5^2\times {\mathrm{129971}}^1$

素因数の和:129989

約数の個数: 30

約数和(自身を含む): 124903092

約数和(自身を除く): 72914692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 129971, 259942, 519884, 649855, 1039768, 1299710, 2079536, 2599420, 3249275, 5198840, 6498550, 10397680, 12997100, 25994200, 51988400]

約数ペア:

[(1, 51988400), (2, 25994200), (4, 12997100), (5, 10397680), (8, 6498550), (10, 5198840), (16, 3249275), (20, 2599420), (25, 2079536), (40, 1299710), (50, 1039768), (80, 649855), (100, 519884), (200, 259942), (400, 129971)]