131580260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{19997}}^1$

素因数の和:20060

約数の個数: 48

約数和(自身を含む): 322527744

約数和(自身を除く): 190947484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 19997, 39994, 79988, 99985, 139979, 199970, 279958, 399940, 559916, 699895, 939859, 1399790, 1879718, 2799580, 3759436, 4699295, 6579013, 9398590, 13158026, 18797180, 26316052, 32895065, 65790130, 131580260]

約数ペア:

[(1, 131580260), (2, 65790130), (4, 32895065), (5, 26316052), (7, 18797180), (10, 13158026), (14, 9398590), (20, 6579013), (28, 4699295), (35, 3759436), (47, 2799580), (70, 1879718), (94, 1399790), (140, 939859), (188, 699895), (235, 559916), (329, 399940), (470, 279958), (658, 199970), (940, 139979), (1316, 99985), (1645, 79988), (3290, 39994), (6580, 19997)]