25080280

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1277}}^1$

素因数の和:1779

約数の個数: 32

約数和(自身を含む): 56589840

約数和(自身を除く): 31509560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1277, 1964, 2455, 2554, 3928, 4910, 5108, 6385, 9820, 10216, 12770, 19640, 25540, 51080, 627007, 1254014, 2508028, 3135035, 5016056, 6270070, 12540140, 25080280]

約数ペア:

[(1, 25080280), (2, 12540140), (4, 6270070), (5, 5016056), (8, 3135035), (10, 2508028), (20, 1254014), (40, 627007), (491, 51080), (982, 25540), (1277, 19640), (1964, 12770), (2455, 10216), (2554, 9820), (3928, 6385), (4910, 5108)]