25771280

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5281}}^1$

素因数の和:5355

約数の個数: 40

約数和(自身を含む): 60912024

約数和(自身を除く): 35140744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 5281, 10562, 21124, 26405, 42248, 52810, 84496, 105620, 211240, 322141, 422480, 644282, 1288564, 1610705, 2577128, 3221410, 5154256, 6442820, 12885640, 25771280]

約数ペア:

[(1, 25771280), (2, 12885640), (4, 6442820), (5, 5154256), (8, 3221410), (10, 2577128), (16, 1610705), (20, 1288564), (40, 644282), (61, 422480), (80, 322141), (122, 211240), (244, 105620), (305, 84496), (488, 52810), (610, 42248), (976, 26405), (1220, 21124), (2440, 10562), (4880, 5281)]