2640820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1451}}^1$

素因数の和:1480

約数の個数: 48

約数和(自身を含む): 6830208

約数和(自身を除く): 4189388

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1451, 1820, 2902, 5804, 7255, 10157, 14510, 18863, 20314, 29020, 37726, 40628, 50785, 75452, 94315, 101570, 132041, 188630, 203140, 264082, 377260, 528164, 660205, 1320410, 2640820]

約数ペア:

[(1, 2640820), (2, 1320410), (4, 660205), (5, 528164), (7, 377260), (10, 264082), (13, 203140), (14, 188630), (20, 132041), (26, 101570), (28, 94315), (35, 75452), (52, 50785), (65, 40628), (70, 37726), (91, 29020), (130, 20314), (140, 18863), (182, 14510), (260, 10157), (364, 7255), (455, 5804), (910, 2902), (1451, 1820)]