291245560

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{53147}}^1$

素因数の和:53295

約数の個数: 32

約数和(自身を含む): 660098160

約数和(自身を除く): 368852600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 53147, 106294, 212588, 265735, 425176, 531470, 1062940, 2125880, 7281139, 14562278, 29124556, 36405695, 58249112, 72811390, 145622780, 291245560]

約数ペア:

[(1, 291245560), (2, 145622780), (4, 72811390), (5, 58249112), (8, 36405695), (10, 29124556), (20, 14562278), (40, 7281139), (137, 2125880), (274, 1062940), (548, 531470), (685, 425176), (1096, 265735), (1370, 212588), (2740, 106294), (5480, 53147)]