128211460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{493121}}^1$

素因数の和:493143

約数の個数: 24

約数和(自身を含む): 289955736

約数和(自身を除く): 161744276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 493121, 986242, 1972484, 2465605, 4931210, 6410573, 9862420, 12821146, 25642292, 32052865, 64105730, 128211460]

約数ペア:

[(1, 128211460), (2, 64105730), (4, 32052865), (5, 25642292), (10, 12821146), (13, 9862420), (20, 6410573), (26, 4931210), (52, 2465605), (65, 1972484), (130, 986242), (260, 493121)]