127840520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{43781}}^1$

素因数の和:43865

約数の個数: 32

約数和(自身を含む): 291588120

約数和(自身を除く): 163747600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 43781, 87562, 175124, 218905, 350248, 437810, 875620, 1751240, 3196013, 6392026, 12784052, 15980065, 25568104, 31960130, 63920260, 127840520]

約数ペア:

[(1, 127840520), (2, 63920260), (4, 31960130), (5, 25568104), (8, 15980065), (10, 12784052), (20, 6392026), (40, 3196013), (73, 1751240), (146, 875620), (292, 437810), (365, 350248), (584, 218905), (730, 175124), (1460, 87562), (2920, 43781)]