251980820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{138451}}^1$

素因数の和:138480

約数の個数: 48

約数和(自身を含む): 651278208

約数和(自身を除く): 399297388

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, 1820, 138451, 276902, 553804, 692255, 969157, 1384510, 1799863, 1938314, 2769020, 3599726, 3876628, 4845785, 7199452, 8999315, 9691570, 12599041, 17998630, 19383140, 25198082, 35997260, 50396164, 62995205, 125990410, 251980820]

約数ペア:

[(1, 251980820), (2, 125990410), (4, 62995205), (5, 50396164), (7, 35997260), (10, 25198082), (13, 19383140), (14, 17998630), (20, 12599041), (26, 9691570), (28, 8999315), (35, 7199452), (52, 4845785), (65, 3876628), (70, 3599726), (91, 2769020), (130, 1938314), (140, 1799863), (182, 1384510), (260, 969157), (364, 692255), (455, 553804), (910, 276902), (1820, 138451)]