81408400

素因数分解:

$2^4\times 5^2\times {\mathrm{271}}^1\times {\mathrm{751}}^1$

素因数の和:1040

約数の個数: 60

約数和(自身を含む): 196566784

約数和(自身を除く): 115158384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 271, 400, 542, 751, 1084, 1355, 1502, 2168, 2710, 3004, 3755, 4336, 5420, 6008, 6775, 7510, 10840, 12016, 13550, 15020, 18775, 21680, 27100, 30040, 37550, 54200, 60080, 75100, 108400, 150200, 203521, 300400, 407042, 814084, 1017605, 1628168, 2035210, 3256336, 4070420, 5088025, 8140840, 10176050, 16281680, 20352100, 40704200, 81408400]

約数ペア:

[(1, 81408400), (2, 40704200), (4, 20352100), (5, 16281680), (8, 10176050), (10, 8140840), (16, 5088025), (20, 4070420), (25, 3256336), (40, 2035210), (50, 1628168), (80, 1017605), (100, 814084), (200, 407042), (271, 300400), (400, 203521), (542, 150200), (751, 108400), (1084, 75100), (1355, 60080), (1502, 54200), (2168, 37550), (2710, 30040), (3004, 27100), (3755, 21680), (4336, 18775), (5420, 15020), (6008, 13550), (6775, 12016), (7510, 10840)]