18693328

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 37363680

約数和(自身を除く): 18670352

約数列:

[1, 2, 4, 8, 16, 61, 107, 122, 179, 214, 244, 358, 428, 488, 716, 856, 976, 1432, 1712, 2864, 6527, 10919, 13054, 19153, 21838, 26108, 38306, 43676, 52216, 76612, 87352, 104432, 153224, 174704, 306448, 1168333, 2336666, 4673332, 9346664, 18693328]

約数ペア:

[(1, 18693328), (2, 9346664), (4, 4673332), (8, 2336666), (16, 1168333), (61, 306448), (107, 174704), (122, 153224), (179, 104432), (214, 87352), (244, 76612), (358, 52216), (428, 43676), (488, 38306), (716, 26108), (856, 21838), (976, 19153), (1432, 13054), (1712, 10919), (2864, 6527)]