157219940

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{19801}}^1$

素因数の和:20207

約数の個数: 24

約数和(自身を含む): 331010232

約数和(自身を除く): 173790292

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 19801, 39602, 79204, 99005, 198010, 396020, 7860997, 15721994, 31443988, 39304985, 78609970, 157219940]

約数ペア:

[(1, 157219940), (2, 78609970), (4, 39304985), (5, 31443988), (10, 15721994), (20, 7860997), (397, 396020), (794, 198010), (1588, 99005), (1985, 79204), (3970, 39602), (7940, 19801)]