2653960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1543}}^1$

素因数の和:1597

約数の個数: 32

約数和(自身を含む): 6114240

約数和(自身を除く): 3460280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1543, 1720, 3086, 6172, 7715, 12344, 15430, 30860, 61720, 66349, 132698, 265396, 331745, 530792, 663490, 1326980, 2653960]

約数ペア:

[(1, 2653960), (2, 1326980), (4, 663490), (5, 530792), (8, 331745), (10, 265396), (20, 132698), (40, 66349), (43, 61720), (86, 30860), (172, 15430), (215, 12344), (344, 7715), (430, 6172), (860, 3086), (1543, 1720)]