177720940

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{21107}}^1$

素因数の和:21537

約数の個数: 24

約数和(自身を含む): 374118192

約数和(自身を除く): 196397252

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 21107, 42214, 84428, 105535, 211070, 422140, 8886047, 17772094, 35544188, 44430235, 88860470, 177720940]

約数ペア:

[(1, 177720940), (2, 88860470), (4, 44430235), (5, 35544188), (10, 17772094), (20, 8886047), (421, 422140), (842, 211070), (1684, 105535), (2105, 84428), (4210, 42214), (8420, 21107)]