28208140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45497}}^1$

素因数の和:45537

約数の個数: 24

約数和(自身を含む): 61149312

約数和(自身を除く): 32941172

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 45497, 90994, 181988, 227485, 454970, 909940, 1410407, 2820814, 5641628, 7052035, 14104070, 28208140]

約数ペア:

[(1, 28208140), (2, 14104070), (4, 7052035), (5, 5641628), (10, 2820814), (20, 1410407), (31, 909940), (62, 454970), (124, 227485), (155, 181988), (310, 90994), (620, 45497)]