25198120

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1283}}^1$

素因数の和:1785

約数の個数: 32

約数和(自身を含む): 56855520

約数和(自身を除く): 31657400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1283, 1964, 2455, 2566, 3928, 4910, 5132, 6415, 9820, 10264, 12830, 19640, 25660, 51320, 629953, 1259906, 2519812, 3149765, 5039624, 6299530, 12599060, 25198120]

約数ペア:

[(1, 25198120), (2, 12599060), (4, 6299530), (5, 5039624), (8, 3149765), (10, 2519812), (20, 1259906), (40, 629953), (491, 51320), (982, 25660), (1283, 19640), (1964, 12830), (2455, 10264), (2566, 9820), (3928, 6415), (4910, 5132)]