65381560

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3329}}^1$

素因数の和:3831

約数の個数: 32

約数和(自身を含む): 147452400

約数和(自身を除く): 82070840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3329, 3928, 4910, 6658, 9820, 13316, 16645, 19640, 26632, 33290, 66580, 133160, 1634539, 3269078, 6538156, 8172695, 13076312, 16345390, 32690780, 65381560]

約数ペア:

[(1, 65381560), (2, 32690780), (4, 16345390), (5, 13076312), (8, 8172695), (10, 6538156), (20, 3269078), (40, 1634539), (491, 133160), (982, 66580), (1964, 33290), (2455, 26632), (3329, 19640), (3928, 16645), (4910, 13316), (6658, 9820)]