25403540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 55292160

約数和(自身を除く): 29888620

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 109, 172, 215, 218, 271, 430, 436, 542, 545, 860, 1084, 1090, 1355, 2180, 2710, 4687, 5420, 9374, 11653, 18748, 23306, 23435, 29539, 46612, 46870, 58265, 59078, 93740, 116530, 118156, 147695, 233060, 295390, 590780, 1270177, 2540354, 5080708, 6350885, 12701770, 25403540]

約数ペア:

[(1, 25403540), (2, 12701770), (4, 6350885), (5, 5080708), (10, 2540354), (20, 1270177), (43, 590780), (86, 295390), (109, 233060), (172, 147695), (215, 118156), (218, 116530), (271, 93740), (430, 59078), (436, 58265), (542, 46870), (545, 46612), (860, 29539), (1084, 23435), (1090, 23306), (1355, 18748), (2180, 11653), (2710, 9374), (4687, 5420)]