290649980

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{34519}}^1$

素因数の和:34949

約数の個数: 24

約数和(自身を含む): 611832480

約数和(自身を除く): 321182500

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 34519, 69038, 138076, 172595, 345190, 690380, 14532499, 29064998, 58129996, 72662495, 145324990, 290649980]

約数ペア:

[(1, 290649980), (2, 145324990), (4, 72662495), (5, 58129996), (10, 29064998), (20, 14532499), (421, 690380), (842, 345190), (1684, 172595), (2105, 138076), (4210, 69038), (8420, 34519)]