155357420

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{18451}}^1$

素因数の和:18881

約数の個数: 24

約数和(自身を含む): 327043248

約数和(自身を除く): 171685828

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 18451, 36902, 73804, 92255, 184510, 369020, 7767871, 15535742, 31071484, 38839355, 77678710, 155357420]

約数ペア:

[(1, 155357420), (2, 77678710), (4, 38839355), (5, 31071484), (10, 15535742), (20, 7767871), (421, 369020), (842, 184510), (1684, 92255), (2105, 73804), (4210, 36902), (8420, 18451)]